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Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property and equipment, net at December 31, 2019 and 2018 consisted of the following:



	As of December 31,
	2019			2018
Computers, related equipment, and software	$	50,251		$	53,116
Leasehold improvements	44,323			45,052
Furniture and fixtures	16,273			17,408
Aircraft	7,667			7,541
Assets under construction	250			250
Property and equipment	118,764			123,367
Accumulated depreciation and amortization	(80,351		)	(82,993		)
Property and equipment, net	$	38,413		$	40,374

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 11,604	$ 33,107	$ 16,909	$ 17,027
Receivables from clients, net	116,571	109,677
Costs in Excess of Billings, Current	79,937	69,613
Income tax receivable	2,376	6,612
Prepaid Expense and Other Assets, Current	14,248	13,922
Total current assets	224,736	232,931
Property and equipment, net	38,413	40,374
Deferred Tax Assets, Net, Noncurrent	1,145	2,153
Long-term investments	54,541	50,429
Operating Lease, Right-of-Use Asset	54,954	0
Other non-current assets	52,177	30,525
Intangible assets, net	31,625	47,857
Goodwill	646,680	645,263	645,750
Total assets	1,104,271	1,049,532	1,036,928
Current liabilities:
Accounts payable	7,944	10,020
Accrued expenses and other current liabilities	18,554	17,207
Accrued payroll and related benefits	141,605	109,825
Business Combination, Contingent Consideration, Liability, Current	0	9,991
Long-term Debt, Current Maturities	529	243,132
Operating Lease, Liability, Current	7,469	0
Deferred revenues	28,443	28,130
Total current liabilities	204,544	418,305
Non-current liabilities:
Deferred compensation and other liabilities	28,635	20,875
Business Combination, Contingent Consideration, Liability, Noncurrent	0	1,450
Long-term debt, net of current portion	208,324	53,853
Operating Lease, Liability, Noncurrent	69,233	0
Deferred lease incentives	0	13,693
Deferred income taxes, net	8,070	732
Total non-current liabilities	314,262	90,603
Commitments and contingencies
Stockholders’ equity
Common Stock, Value, Issued	247	244
Treasury Stock, Value	128,348	124,794
Additional paid-in capital	460,781	452,573
Retained earnings	237,849	196,106
Accumulated other comprehensive income	14,936	16,495	10,370	3,615
Total stockholders’ equity	585,465	540,624	$ 503,316	$ 648,033
Total liabilities and stockholders’ equity	$ 1,104,271	$ 1,049,532

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2016	$ 648,033	$ 235	$ (113,195)	$ 405,895	$ 351,483	$ 3,615
Beginning balance, shares at Dec. 31, 2016		(23,478,016)	(2,420,913)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(163,362)				(170,117)	6,755
Share-based compensation	14,419			14,419
Issuance of common stock in connection with:
Restricted stock awards, net of cancellations	0	$ 4	$ (3,953)	3,949
Restricted stock awards, net of cancellations, shares		(399,248)	(58,211)
Stock Issued During Period, Value, Acquisitions	9,560	$ 2		9,558
Stock Issued During Period, Shares, Acquisitions		221,558
Shares redeemed for employee tax withholdings	(4,846)		$ (4,846)
Shares redeemed for employee tax withholdings, shares			(112,011)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification \| Accounting Standards Update 2016-09 [Member]	0			435	(435)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification \| Accounting Standards Update 2018-02 [Member]	(488)				(488)
Ending balance at Dec. 31, 2017	503,316	$ 241	$ (121,994)	434,256	180,443	10,370
Ending balance, shares at Dec. 31, 2017		(24,098,822)	(2,591,135)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	19,771				13,646	6,125
Share-based compensation	17,770			17,770
Issuance of common stock in connection with:
Restricted stock awards, net of cancellations	0	$ 3	$ 387	(390)
Restricted stock awards, net of cancellations, shares		(279,430)	5,986
Stock Issued During Period, Value, Stock Options Exercised	937	$ 0		937
Exercise of stock options, shares		40,000
Shares redeemed for employee tax withholdings	(3,187)		$ (3,187)
Shares redeemed for employee tax withholdings, shares			(86,813)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification \| Accounting Standards Update 2014-09 [Member]	2,017				2,017
Ending balance at Dec. 31, 2018	540,624	$ 244	$ (124,794)	452,573	196,106	16,495
Ending balance, shares at Dec. 31, 2018		(24,418,252)	(2,671,962)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	40,184				41,743	(1,559)
Share-based compensation	22,854			22,854
Issuance of common stock in connection with:
Restricted stock awards, net of cancellations	0	$ 4	$ 1,828	(1,832)
Restricted stock awards, net of cancellations, shares		(347,589)	20,171
Stock Issued During Period, Value, Stock Options Exercised	$ 1,244	$ 1		1,243
Exercise of stock options, shares	48,000	47,904
Shares redeemed for employee tax withholdings	$ (5,382)		$ (5,382)
Shares redeemed for employee tax withholdings, shares			(111,511)
Adjustments to Additional Paid in Capital, Other	160			160
Share repurchases	(14,219)	$ (2)		(14,217)
Share repurchases, shares		(210,437)
Ending balance at Dec. 31, 2019	$ 585,465	$ 247	$ (128,348)	$ 460,781	$ 237,849	$ 14,936
Ending balance, shares at Dec. 31, 2019		(24,603,308)	(2,763,302)

Acquisitions - Preliminary Allocation of the Purchase Price to the Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 01, 2017
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Costs in Excess of Billings, Current	$ 79,937	$ 69,613
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Goodwill	$ 646,680	$ 645,263	$ 645,750
Innosight Holdings, LLC [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Accounts receivable				$ 7,752
Costs in Excess of Billings, Current				1,881
Prepaid expenses and other current assets				468
Property and equipment				419
Intangible assets				18,015
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Accounts payable				531
Accrued expenses and other current liabilities				894
Accrued payroll and related benefits				883
Deferred revenues				30
Total identifiable net assets				26,197
Goodwill				87,410
Total purchase price				$ 113,607

Revenues Performance Obligations Information (Details) $ in Millions	Dec. 31, 2019 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 90.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Amount	$ 58.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Amount	$ 20.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	5 years
Revenue, Remaining Performance Obligation, Amount	$ 11.1

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The accompanying consolidated financial statements reflect the financial position at December 31, 2019 and 2018, and the results of operations and cash flows for the years ended December 31, 2019, 2018, and 2017.

The consolidated financial statements include the accounts of Huron Consulting Group Inc. and its subsidiaries, all of which are wholly-owned. All intercompany balances and transactions have been eliminated in consolidation.

On January 1, 2019, we adopted Accounting Standard Update ("ASU") 2016-02, Leases. For additional information on the adoption of ASU 2016-02, refer to our leases policy and new accounting pronouncements below.

On January 1, 2018, we adopted ASU 2014-09, Revenue from Contracts with Customers, a new Topic, ASC 606, which superseded ASC 605, Revenue Recognition. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. We adopted ASC 606 on a modified retrospective basis to all open contracts, as modified, as of that date. Adoption of the new standard resulted in changes to our accounting policy for revenue recognition, most notably for performance-based billing arrangements, and sales commissions. Adopting ASC 606 on a modified retrospective basis had no impact on our consolidated financial statements in the prior periods presented. Upon adoption, we recorded a $2.0 million cumulative-effect adjustment to record a net increase to retained earnings for the portion of performance-based billing arrangements that have been earned as of the adoption date but for which we had not recognized as revenue under previous revenue recognition guidance, the capitalization of sales commissions paid on open contracts as of the adoption date, and the related tax effects. Refer to our revenue recognition and capitalized sales commissions policies below for additional information.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts that are reported in the consolidated financial statements and accompanying disclosures. Actual results may differ from these estimates and assumptions.

Revenue Recognition

We generate substantially all of our revenues from providing professional services to our clients. We also generate revenues from software licenses; software support and maintenance and subscriptions to our cloud-based analytic tools and solutions; speaking engagements; conferences; and publications. A single contract could include one or multiple performance obligations. For those contracts that have multiple performance obligations, we allocate the total transaction price to each performance obligation based on its relative standalone selling price, which is determined based on our overall pricing objectives, taking into consideration market conditions and other factors.

Revenue is recognized when control of the goods and services provided are transferred to our customers and in an amount that reflects the consideration we expect to be entitled to in exchange for those goods and services using the following steps: 1) identify the contract, 2) identify the performance obligations, 3) determine the transaction price, 4) allocate the transaction price to the performance obligations in the contract, and 5) recognize revenue as or when we satisfy the performance obligations.

We typically satisfy our performance obligations for professional services over time as the related services are provided. The performance obligations related to software support and maintenance and subscriptions to our cloud-based analytic tools and solutions are typically satisfied evenly over the course of the service period. Other performance obligations, such as certain software licenses, speaking engagements, conferences, and publications, are satisfied at a point in time.

We generate our revenues under four types of billing arrangements: fixed-fee (including software license revenue); time-and-expense; performance-based; and software support, maintenance and subscriptions.

In fixed-fee billing arrangements, we agree to a pre-established fee in exchange for a predetermined set of professional services. We set the fees based on our estimates of the costs and timing for completing the engagements. We generally recognize revenues under fixed-fee billing arrangements using a proportionate performance approach, which is based on work completed to-date versus our estimates of the total services to be provided under the engagement. Contracts within our Culture and Organizational Excellence solution include fixed-fee partner contracts with multiple performance obligations, which primarily consist of coaching services, as well as speaking engagements, conferences, publications and software products (“Partner Contracts”). Revenues for coaching services and software products are generally recognized on a straight-line basis over the length of the contract. All other revenues under Partner Contracts, including speaking engagements, conferences and publications, are recognized at the time the goods or services are provided. Estimates of total engagement revenues and cost of services are monitored regularly during the term of the engagement. If our estimates indicate a potential loss, such loss is recognized in the period in which the loss first becomes probable and reasonably estimable.

We also generate revenues from software licenses for our revenue cycle management software and research administration and compliance software. Licenses for our revenue cycle management software are sold only as a component of our consulting projects, and the services we provide are essential to the functionality of the software. Therefore, revenues from these software licenses are recognized over the term of the related consulting services contract. License revenue from our research administration and compliance software is generally recognized in the month in which the software is delivered.

Time-and-expense billing arrangements require the client to pay based on the number of hours worked by our revenue-generating professionals at agreed upon rates. Time-and-expense arrangements also include certain speaking engagements, conferences, and publications purchased by our clients outside of Partner Contracts within our Culture and Organizational Excellence solution. We recognize revenues under time-and-expense arrangements as the related services or publications are provided, using the right to invoice practical expedient which allows us to recognize revenue in the amount that we have a right to invoice based on the number of hours worked and the agreed upon hourly rates or the value of the speaking engagements, conferences or publications purchased by our clients.

In performance-based billing arrangements, fees are tied to the attainment of contractually defined objectives. We enter into performance-based engagements in essentially two forms. First, we generally earn fees that are directly related to the savings formally acknowledged by the client as a result of adopting our recommendations for improving operational and cost effectiveness in the areas we review. Second, we have performance-based engagements in which we earn a success fee when and if certain predefined outcomes occur. We recognize revenue under performance-based billing arrangements using the following steps: 1) estimate variable consideration using a probability-weighted assessment of the fees to be earned, 2) apply a constraint to the estimated variable consideration to limit the amount that could be reversed when the uncertainty is resolved (the “constraint”), and 3) recognize revenue of estimated variable consideration, net of the constraint, based on work completed to-date versus our estimates of the total services to be provided under the engagement.

Clients that have purchased one of our software licenses can pay an annual fee for software support and maintenance. We also generate subscription revenue from our cloud-based analytic tools and solutions. Software support, maintenance and subscription revenues are recognized ratably over the support or subscription period. These fees are generally billed in advance and included in deferred revenues until recognized.

Provisions are recorded for the estimated realization adjustments on all engagements, including engagements for which fees are subject to review by the bankruptcy courts.

Expense reimbursements that are billable to clients are included in total revenues and reimbursable expenses. Under fixed-fee billing arrangements, we estimate the total amount of reimbursable expenses to be incurred over the course of the engagement and recognize the estimated amount as revenue using a proportionate performance approach, which is based on work completed to-date versus our estimates of the total services to be provided under the engagement. Under time-and-expense billing arrangements we recognize reimbursable expenses as revenue as the related services are provided, using the right to invoice practical expedient. Reimbursable expenses are recognized as expenses in the period in which the expense is incurred. Subcontractors that are billed to clients at cost are also included in reimbursable expenses. When billings do not specifically identify reimbursable expenses, we allocate the portion of the billings equivalent to these expenses to reimbursable expenses.

The payment terms and conditions in our customer contracts vary. Differences between the timing of billings and the recognition of revenue are recognized as either unbilled services or deferred revenues in the consolidated balance sheets. Revenues recognized for services performed but not yet billed to clients are recorded as unbilled services. Revenues recognized, but for which we are not yet entitled to bill because certain events, such as the completion of the measurement period or client approval, must occur, are recorded as contract assets

and included within unbilled services. Client prepayments and retainers are classified as deferred revenues and recognized over future periods as earned in accordance with the applicable engagement agreement.

Capitalized Sales Commissions

Sales commissions earned by our sales professionals are considered incremental and recoverable costs of obtaining a contract with a customer. Sales commissions with an expected amortization period greater than one year are deferred and amortized on a straight-line basis over the period of the associated contract. We elected to apply the practical expedient to expense sales commissions as incurred when the expected amortization period is one year or less. Amortization expense is recorded to direct costs. During the years ended December 31, 2019 and 2018, we amortized $0.3 million and $0.2 million, respectively, of capitalized sales commissions. Unamortized sales commissions were $0.8 million and $0.4 million as of December 31, 2019 and 2018, respectively.

Allowances for Doubtful Accounts and Unbilled Services

We maintain allowances for doubtful accounts and for services performed but not yet billed based on several factors, including the estimated cash realization from amounts due from clients, an assessment of a client’s ability to make required payments, and the historical percentages of fee adjustments and write-offs by age of receivables and unbilled services. The allowances are assessed by management on a regular basis. These estimates may differ from actual results. If the financial condition of a client deteriorates in the future, impacting the client’s ability to make payments, an increase to our allowance might be required or our allowance may not be sufficient to cover actual write-offs.

We record the provision for doubtful accounts and unbilled services as a reduction in revenue to the extent the provision relates to fee adjustments and other discretionary pricing adjustments. To the extent the provision relates to a client’s inability to make required payments on accounts receivables, we record the provision to selling, general and administrative expenses.

Direct Costs and Reimbursable Expenses

Direct costs and reimbursable expenses consist primarily of revenue-generating employee compensation and their related benefits and share-based compensation costs; as well as commissions, the cost of outside consultants or subcontractors assigned to revenue-generating activities, technology costs, other third-party costs directly attributable to our revenue-generating activities, and direct expenses to be reimbursed by clients. Direct costs and reimbursable expenses incurred on engagements are expensed in the period incurred.

Cash and Cash Equivalents

We consider all highly liquid investments, including overnight investments and commercial paper, with original maturities of three months or less to be cash equivalents.

Concentrations of Credit Risk

To the extent receivables from clients become delinquent, collection activities commence. No single client balance is considered large enough to pose a material credit risk. The allowances for doubtful accounts and unbilled services are based upon the expected ability to collect accounts receivable and bill and collect unbilled services. Management does not anticipate incurring losses on accounts receivable in excess of established allowances. See Note 19 “Segment Information” for concentration of accounts receivable and unbilled services.

We hold our cash in accounts at multiple third-party financial institutions. These deposits, at times, may exceed federally insured limits. We review the credit ratings of these financial institutions, regularly monitor the cash balances in these accounts, and adjust the balances as appropriate. However, these cash balances could be impacted if the underlying financial institutions fail or are subject to other adverse conditions in the financial markets.

Long-term Investments

Our long-term investments consist of our convertible debt investment in Shorelight Holdings, LLC ("Shorelight") and preferred stock investment in Medically Home Group, Inc. ("Medically Home").

We classified the convertible debt investment in Shorelight as available-for-sale at the time of purchase and reevaluate such classification as of each balance sheet date. The investment is carried at fair value with unrealized holding gains and losses reported in other comprehensive income. If the investment is in an unrealized loss position, we assess whether the investment is other-than-temporarily impaired. We consider impairments to be other-than-temporary if they are related to significant credit deterioration or if it is likely we will sell the security before the recovery of its cost basis. We have not identified any other-than-temporary impairments for our convertible debt investment. In the event there are realized gains and losses or declines in value judged to be other-than-temporary, we will record the amount in earnings.

We classified the preferred stock investment in Medically Home as an equity security without a readily determinable value at the time of purchase and reevaluate such classification as of each balance sheet date. We elected the measurement alternative to value this equity security without a readily determinable fair value. Under the measurement alternative, the investment is recorded at its cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment in Medically Home. Any unrealized holding gains and losses resulting from observable price changes are recorded in our consolidated statement of operations. Following our purchase, there has been no impairment, nor any observable price changes to our investment.

See Note 13 “Fair Value of Financial Instruments” for further information on our long-term investments.

Fair Value of Financial Instruments

See Note 13 “Fair Value of Financial Instruments” for the accounting policies used to measure the fair value of our financial assets and liabilities that are measured at fair value on a recurring basis.

Property and Equipment

Property and equipment are recorded at cost, less accumulated depreciation. Depreciation of property and equipment is computed on a straight-line basis over the estimated useful lives of the assets. Software, computers, and related equipment are depreciated over an estimated useful life of two to four years. Furniture and fixtures are depreciated over five years. Aircraft are depreciated over ten years. Leasehold improvements are amortized over the lesser of the estimated useful life of the asset or the initial term of the lease.

Leases

We determine if an arrangement contains a lease and the classification of such lease at inception. As of December 31, 2019, all of our material leases are classified as operating leases; we have not entered into any material finance leases. For all operating leases with an initial term greater than 12 months, we recognize an operating lease right-of-use ("ROU") asset and operating lease liability. Leases with an initial term of 12 months or less are not recorded on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term.

Operating lease ROU assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. As our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the lease commencement date and provided by the administrative agent for our senior secured credit facility in determining the present value of lease payments. Operating lease ROU assets exclude lease incentives. We elected the practical expedient to combine lease and nonlease components. Certain lease agreements contain variable lease payments that do not depend on an index or rate. These variable lease payments are not included in the calculation of the operating lease ROU asset and operating lease liability; instead, they are expensed as incurred. Our leases may contain options to extend or terminate the lease, and we include these terms in our calculation of the operating lease ROU asset and operating lease liability when it is reasonably certain that we will exercise the option.

Operating lease expense is recognized on a straight-line basis over the lease term and recorded within selling, general and administrative expenses on our consolidated statement of operations. In accordance with our accounting policy for impairment of long-lived assets, operating lease ROU assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset group to which the operating lease ROU asset is assigned may not be recoverable. We evaluate the recoverability of the asset group based on forecasted undiscounted cash flows. See Note 5 "Leases" for additional information on our leases, including the lease impairment charges recorded in 2019.

Software Development Costs

We incur internal and external software development costs related to our cloud computing applications and software for internal use. We capitalize these software development costs incurred during the application development stage. Costs related to preliminary project activities and post implementation activities are expensed as incurred. Once the project is substantially complete and ready for its intended use these costs are amortized on a straight-line basis over the technology's estimated useful life. Acquired technology assets are initially recorded at fair value and amortized on a straight-line basis over the estimated useful life.

Development costs related to software products that will be sold, leased, or otherwise marketed are expensed until technological feasibility has been established. Thereafter and until the software is available for general release to customers, these software development costs are capitalized and subsequently reported at the lower of unamortized cost or net realizable value. These capitalized development costs are

amortized in proportion to current and future revenue for each product with an annual minimum equal to the straight-line amortization over the remaining estimated economic life of the product. We did not capitalize any development costs for this type of software during 2019 or 2018.

We classify capitalized software development costs, which primarily relate to cloud computing applications and software for internal use, as other non-current assets on our consolidated balance sheet. As of December 31, 2019, gross capitalized software development costs and related accumulated amortization was $21.5 million and $5.9 million, respectively. As of December 31, 2018, gross capitalized software development costs and related accumulated amortization was $10.2 million and $2.9 million, respectively. During the years ended December 31, 2019, 2018, and 2017, we amortized $3.0 million, $1.4 million, and $0.8 million, respectively, of capitalized software development costs.

Intangible Assets Other Than Goodwill

Identifiable intangible assets are amortized over their expected useful lives using a method that reflects the economic benefit expected to be derived from the assets or on a straight-line basis. We evaluate the recoverability of intangible assets periodically by considering events or circumstances that may warrant revised estimates of useful lives or that indicate the asset may be impaired.

Impairment of Long-Lived Assets

Long-lived assets, including property and equipment, right-of-use assets, and intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Events relating to recoverability may include significant unfavorable changes in business conditions, recurring losses, or a significant decline in forecasted operating results over an extended period of time. We evaluate the recoverability of long-lived assets based on forecasted undiscounted cash flows. See Note 5 "Leases" for information on our right-of-use asset impairment charges recorded in 2019. No material impairment charges for other long-lived assets were recorded in 2019, 2018, or 2017.

Goodwill

For acquisitions accounted for as a business combination, goodwill represents the excess of the cost over the fair value of the net assets acquired. We are required to test goodwill for impairment, at the reporting unit level, annually and when events or circumstances indicate the fair value of a reporting unit may be below its carrying value. We perform our annual goodwill impairment test as of November 30 and monitor for interim triggering events on an ongoing basis. A reporting unit is an operating segment or one level below an operating segment (referred to as a component) to which goodwill is assigned when initially recorded. We assign goodwill to reporting units based on our integration plans and the expected synergies resulting from the acquisition. We have six reporting units: Healthcare, Education, Business Advisory, Enterprise Solutions and Analytics, Strategy and Innovation, and Life Sciences. The Business Advisory, Enterprise Solutions and Analytics, Strategy and Innovation, and Life Sciences reporting units make up our Business Advisory operating segment.

Pursuant to our policy, we performed the annual goodwill impairment test as of November 30, 2019 and determined that no impairment of goodwill existed as of that date. Further, we evaluated whether any events have occurred, or any circumstances have changed since November 30, 2019 that would indicate goodwill may have become impaired since our annual impairment test. Based on our evaluation as of December 31, 2019, we determined that no indications of impairment have arisen since our annual goodwill impairment test.

Business Combinations

We use the acquisition method of accounting for business combinations. Each acquired company’s operating results are included in our consolidated financial statements starting on the date of acquisition. The purchase price is equivalent to the fair value of consideration transferred. Tangible and identifiable intangible assets acquired and liabilities assumed are recorded at fair value as of the acquisition date. Goodwill is recognized for the excess of purchase price over the net fair value of tangible and intangible assets acquired and liabilities assumed. Contingent consideration, which is primarily based on the business achieving certain performance targets, is recognized at its fair value on the acquisition date, and changes in fair value are recognized in earnings until settled. Refer to Note 13 “Fair Value of Financial Instruments” for further information regarding our contingent acquisition liability balances.

Income Taxes

Current tax liabilities and assets are recognized for the estimated taxes payable or refundable, respectively, on the tax returns for the current year. We have elected to recognize the tax expense related to Global Intangible Low-Taxed Income ("GILTI") as a period expense in the period the tax is incurred. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. To the extent that deferred tax assets will not likely be recovered from future taxable income, a valuation allowance is established against such deferred tax assets. Refer to Note 17 "Income Taxes" for further information regarding incomes taxes.

Share-Based Compensation

Share-based compensation cost is measured based on the grant date fair value of the respective awards. We generally recognize share-based compensation ratably using the straight-line attribution method; however, for those awards with performance criteria and graded vesting features, we use the graded vesting attribution method. It is our policy to account for forfeitures as they occur.

Sponsorship and Advertising Costs

Sponsorship and advertising costs are expensed as incurred. Such expenses for the years ended December 31, 2019, 2018, and 2017 totaled $8.4 million, $7.9 million, and $6.6 million, respectively, and are a component of selling, general and administrative expenses on our consolidated statement of operations.

Convertible Senior Notes

In September 2014, we issued $250 million principal amount of 1.25% convertible senior notes due 2019 (the “Convertible Notes”) in a private offering. The Convertible Notes matured on October 1, 2019, and the outstanding principal and accrued interest were paid in full at that time. At issuance, we separated the Convertible Notes into liability and equity components. The carrying amount of the liability component was determined by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying value of the equity component representing the conversion option, which was recognized as a debt discount, was determined by deducting the fair value of the liability component from the proceeds of the Convertible Notes. The debt discount was amortized to interest expense using the effective interest method over the term of the Convertible Notes. The equity component was not remeasured as it continued to meet the conditions for equity classification. Refer to Note 7 “Financing Arrangements” for further information regarding the Convertible Notes.

Debt Issuance Costs

We amortize the costs we incur to obtain debt financing over the contractual life of the related debt using the effective interest method for non-revolving debt and the straight-line method for revolving debt. The amortization expense is included in interest expense, net of interest income in our statement of operations. Unamortized debt issuance costs attributable to our revolving credit facility are included as a component of other non-current assets. Unamortized debt issuance costs attributable to our Convertible Notes were recorded as a deduction from the carrying amount of the debt liability.

Foreign Currency

Assets and liabilities of foreign subsidiaries whose functional currency is not the United States Dollar (USD) are translated into the USD using the exchange rates in effect at period end. Revenue and expense items are translated using the average exchange rates for the period. Foreign currency translation adjustments are included in accumulated other comprehensive income, which is a component of stockholders’ equity.

Foreign currency transaction gains and losses are included in other income, net on the consolidated statement of operations. We recognized $0.2 million of foreign currency transaction losses in 2019, $0.5 million of foreign currency transaction losses in 2018, and $0.4 million of foreign currency transaction gains in 2017.

Segment Reporting

Segments are defined as components of a company that engage in business activities from which they may earn revenues and incur expenses, and for which separate financial information is available and is evaluated regularly by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. Our chief operating decision maker manages the business under three operating segments, which are our reportable segments: Healthcare, Business Advisory, and Education.

New Accounting Pronouncements

Recently Adopted

In March 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-02, Leases, as a new Topic, ASC 842, which superseded ASC Topic 840, Leases, and sets forth the principles for the recognition, measurement, presentation, and disclosure of leases for lessees and lessors. ASU 2016-02 requires lessees to classify leases as either finance or operating leases and to record on the balance sheet a right-of-use asset and a lease liability, equal to the present value of the remaining lease payments, for all leases with a term greater than 12 months regardless of the lease classification. The lease classification will determine whether the lease expense is recognized using an effective interest rate method or on a straight-line basis over the term of the lease. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, which provides an optional transition method that allows entities to initially apply ASC 842 at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings on the adoption date. We adopted ASC 842 effective January 1, 2019 on a modified retrospective basis for existing leases using the transition method allowed by ASU 2018-11, which had no impact on our consolidated financial statements in the prior periods presented. The new lease standard had a material impact on our consolidated balance sheet upon adoption but did not impact our consolidated statement of operations. The most significant impact to our consolidated balance sheet is the recognition of ROU assets and lease liabilities for operating leases. The impact of the new lease standard on our consolidated balance sheet upon adoption follows:



	As of December 31, 2018		ASC 842 Adjustment			As of January 1, 2019
Assets
Operating lease right-of-use assets	$	—	$	56,463		$	56,463

Liabilities
Accrued expenses and other current liabilities	$	17,207	$	(2,557	)	$	14,650
Current maturities of operating lease liabilities	$	—	$	10,537		$	10,537
Deferred compensation and other liabilities	$	20,875	$	(536	)	$	20,339
Deferred lease incentives	$	13,693	$	(13,693	)	$	—
Operating lease liabilities, net of current portion	$	—	$	62,712		$	62,712

In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other - Internal Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. This update aligns the requirements for capitalizing implementation costs incurred in a cloud computing arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. Capitalized implementation costs are amortized on a straight-line basis generally over the term of the service contract with the amortization recognized in the same financial statement line item as the fees related to the service contract. ASU 2018-15 is effective beginning January 1, 2020, with early adoption permitted. We adopted this ASU in the third quarter of 2019 on a prospective basis. In 2019, we capitalized an immaterial amount of implementation costs for cloud computing arrangements that are service contracts. The future impact of adoption of this ASU on our consolidated financial statements will depend on the magnitude of implementation costs we may incur to implement cloud computing arrangements that are service contracts.

Not Yet Adopted

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement, which modifies certain disclosure requirements related to fair value measurements. ASU 2018-13 will be effective for us beginning January 1, 2020. We do not expect this guidance to have an impact on the amounts reported on our consolidated financial statements, and we will update our disclosures within the notes to our consolidated financial statements as required by ASU 2018-13.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740, Income Taxes, related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The new guidance also simplifies other aspects of the accounting for franchise taxes and enacted changes in tax laws or tax rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. ASU 2019-12 will be effective for us beginning January 1, 2021, with early adoption permitted. We are currently evaluating the potential impact this guidance will have on our consolidated financial statements.

Financing Arrangements Financing Arrangements - Summary of Debt Maturities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Debt Disclosure [Abstract]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	$ 529
Long-term Debt, Maturities, Repayments of Principal in Year Two	544
Long-term Debt, Maturities, Repayments of Principal in Year Three	559
Long-term Debt, Maturities, Repayments of Principal in Year Four	575
Long-term Debt, Maturities, Repayments of Principal in Year Five	$ 206,646

Restructuring Charges Restructuring Charges - Rollforward (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2019	Dec. 31, 2019	Dec. 31, 2018
Restructuring Reserve [Roll Forward]
Restructuring reserve, period start	$ 2,911	$ 2,911	$ 5,514
Restructuring additions		645	2,970
Payments for restructuring		(1,378)	(6,354)
Restructuring reserve adjustments		(900)	781
Restructuring reserve, period end	1,792	159	2,911
Office Space Reductions [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, period start	2,468	2,468	4,247
Restructuring additions		9	677
Payments for restructuring		(383)	(3,284)
Restructuring reserve adjustments		(884)	828
Restructuring reserve, period end	1,349	91	2,468
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, period start	0	0	0
Restructuring additions		0	191
Payments for restructuring		0	(191)
Restructuring reserve adjustments		0	0
Restructuring reserve, period end	0	0	0
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, period start	443	443	1,267
Restructuring additions		636	2,102
Payments for restructuring		(995)	(2,879)
Restructuring reserve adjustments		(16)	(47)
Restructuring reserve, period end	443	$ 68	$ 443
Accounting Standards Update 2016-02 [Member]
Restructuring Charges [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(1,119)
Accounting Standards Update 2016-02 [Member] \| Office Space Reductions [Member]
Restructuring Charges [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(1,119)
Accounting Standards Update 2016-02 [Member] \| Other Restructuring [Member]
Restructuring Charges [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	0
Accounting Standards Update 2016-02 [Member] \| Employee Severance [Member]
Restructuring Charges [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 0

Summary of Significant Accounting Policies Impact of Adoption (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Dec. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	$ 56,463	$ 54,954	$ 0
Accrued expenses and other current liabilities	14,650	18,554	17,207
Operating Lease, Liability, Current	10,537	7,469	0
Deferred compensation and other liabilities	20,339	28,635	20,875
Deferred lease incentives	0	0	13,693
Operating Lease, Liability, Noncurrent	62,712	$ 69,233	$ 0
Operating lease right-of-use asset [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	56,463
Accrued Liabilities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(2,557)
Operating lease liability current [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	10,537
Other Liabilities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(536)
Deferred rent credit noncurrent [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(13,693)
Operating lease liability noncurrent [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 62,712

Revenues Revenue	12 Months Ended
Revenues Revenue	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Revenues For the years ended December 31, 2019, 2018 and 2017 we recognized revenues of $876.8 million, $795.1 million, and $732.6 million, respectively. Of the $876.8 million recognized in 2019, we recognized revenues of $2.8 million from obligations satisfied, or partially satisfied, in prior periods due to the release of allowances on unbilled services as a result of securing contract amendments. During 2019, we recognized a $1.0 million decrease to revenues due to changes in the estimates of our variable consideration under performance-based billing arrangements. Of the $795.1 million recognized in 2018, we recognized revenues of $10.8 million from obligations satisfied, or partially satisfied, in prior periods, of which $7.2 million was due to changes in the estimates of our variable consideration under performance-based billing arrangements and $3.6 million was primarily due to the release of allowances on unbilled services due to securing contract amendments. As of December 31, 2019, we had $90.1 million of remaining performance obligations under engagements with original expected durations greater than one year. These remaining performance obligations exclude obligations under contracts with an original expected duration of one year or less, variable consideration which has been excluded from the total transaction price due to the constraint, and performance obligations under time-and-expense engagements which are recognized in the amount invoiced. Of the $90.1 million of performance obligations, we expect to recognize approximately $58.1 million as revenue in 2020, $20.9 million in 2021, and the remaining $11.1 million thereafter. Actual revenue recognition could differ from these amounts as a result of changes in the estimated timing of work to be performed, adjustments to estimated variable consideration in performance-based arrangements, or other factors. Contract Assets and Liabilities The payment terms and conditions in our customer contracts vary. Differences between the timing of billings and the recognition of revenue are recognized as either unbilled services or deferred revenues in the consolidated balance sheets. Unbilled services include revenues recognized for services performed but not yet billed to clients. Services performed that we are not yet entitled to bill because certain events must occur, such as the completion of the measurement period or client approval in performance-based engagements, are recorded as contract assets and included within unbilled services, net. The contract asset balance as of December 31, 2019 and 2018 was $12.6 million and $9.1 million, respectively. The $3.5 million increase primarily reflects timing differences between the completion of our performance obligations and the amounts billed or billable to clients in accordance with their contractual billing terms. Client prepayments and retainers are classified as deferred revenues and recognized over future periods in accordance with the applicable engagement agreement and our revenue recognition policy. Our deferred revenues balance as of December 31, 2019 and December 31, 2018 was $28.4 million and $28.1 million respectively. The $0.3 million increase primarily reflects timing differences between client payments in accordance with their contract terms and the completion of our performance obligations. For the year ended December 31, 2019, $22.8 million of revenues recognized were included in the deferred revenue balance as of December 31, 2018. For the year ended December 31, 2018, $23.5 million of revenues recognized were included in the deferred revenue balance as of December 31, 2017.

Property and Equipment, Net - Summary of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment	$ 118,764	$ 123,367
Accumulated depreciation and amortization	(80,351)	(82,993)
Property and equipment, net	38,413	40,374
Computers, related equipment and software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	50,251	53,116
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	44,323	45,052
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	16,273	17,408
Aircraft [Domain]
Property, Plant and Equipment [Line Items]
Property and equipment	7,667	7,541
Property and equipment, net	5,100	5,800
Assets under Construction [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 250	$ 250

Fair Value of Financial Instruments Fair Value of Financial Instruments - Convertible Debt Investment Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 76,987	$ 69,387
Convertible Debt Securities [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	49,542	50,429	$ 39,904
Shorelight Holdings Llc [Member] \| Convertible Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	$ (887)	$ 10,525

Equity Incentive Plans - Additional Information (Detail) $ / shares in Units, $ in Millions		3 Months Ended	12 Months Ended
	May 01, 2015 shares	Mar. 31, 2020 shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Retirement eligible provision, minimum age			62 years
Retirement eligible provision, minimum years of service			7 years
Share-based compensation expense \| $			$ 24.2	$ 18.8	$ 14.8
Income tax benefits \| $			5.3	$ 4.6	5.8
Unrecognized compensation cost \| $			$ 26.2
Unrecognized compensation cost, Period			2 years 2 months 12 days
Stock option awards granted			0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number			106,000	154,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value \| $			$ 1.6
Exercise of stock options, shares			48,000
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Aggregate fair value of stock vested \| $			$ 14.5	$ 9.1	$ 11.1
Weighted average grant date fair value (in USD per share) \| $ / shares			$ 48.57	$ 38.45	$ 42.11
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			786,000	758,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			31,000
Performance-based stock activity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value of stock vested \| $			$ 3.4	$ 1.5	$ 3.6
Weighted average grant date fair value (in USD per share) \| $ / shares			$ 47.93	$ 35.25	$ 42.75
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			500,000	436,000
Nonvested And Unearned Performance Shares			403,794
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			144,000
Performance-based stock activity [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			2 years
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value \| $				$ 0.8
Exercise of stock options, shares					0
Executive Officer [Member] \| Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Stock options contractual term			10 years
Two Thousand And Twelve Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized			2,254,000
Shares available for issuance			1,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number			32,000
Two Thousand And Twelve Plan [Member] \| Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			774,000	747,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			30,000
Stock Ownership Participation Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance	300,000		100,000
Restricted stock granted as a percentage of purchased shares	0.25
Stock Ownership Participation Program [Member] \| Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			12,000	11,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			1,000
Two Thousand and Four Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number			74,000
Forecast [Member] \| Performance-based stock activity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		110,936

Fair Value of Financial Instruments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Document Period End Date	Dec. 31, 2019
Fair Value, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	$ 76,987	$ 69,387
Financial and Nonfinancial Liabilities, Fair Value Disclosure	546	11,441
Fair Value, Recurring [Member] \| Deferred Compensation Plan Assets [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	27,445	18,205
Fair Value, Recurring [Member] \| Contingent Consideration Liability [Member]
Assets, Fair Value Disclosure [Abstract]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	11,441	$ 22,828
Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure		753
Financial and Nonfinancial Liabilities, Fair Value Disclosure	546
Fair Value, Recurring [Member] \| Convertible Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	49,542	50,429	$ 39,904
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	27,445	18,958
Financial and Nonfinancial Liabilities, Fair Value Disclosure	546	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Deferred Compensation Plan Assets [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	27,445	18,205
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure		753
Financial and Nonfinancial Liabilities, Fair Value Disclosure	546
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	49,542	50,429
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	11,441
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Contingent Consideration Liability [Member]
Assets, Fair Value Disclosure [Abstract]
Financial and Nonfinancial Liabilities, Fair Value Disclosure		11,441
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Convertible Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	$ 49,542	$ 50,429

Acquisitions - Schedule of Components of Identifiable Intangible Assets Acquired and their Estimated Useful Lives (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 01, 2017	Dec. 31, 2019
Customer contracts [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life in years		2 years
Non-competition Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life in years		5 years
Off-Market Favorable Lease [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life in years		3 years
Innosight Holdings, LLC [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 18,015
Innosight Holdings, LLC [Member] \| Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 9,500
Useful life in years	6 years
Innosight Holdings, LLC [Member] \| Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 6,000
Useful life in years	6 years
Innosight Holdings, LLC [Member] \| Customer contracts [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 1,000
Useful life in years	1 year
Innosight Holdings, LLC [Member] \| Non-competition Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 1,300
Useful life in years	5 years
Innosight Holdings, LLC [Member] \| Off-Market Favorable Lease [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 215
Useful life in years	1 year

Financing Arrangements - Summary of Interest Expense Recognized (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Expense Recognized [Line Items]
Contractual interest coupon	$ 2,344	$ 3,125	$ 3,125
Amortization of debt discount	6,436	8,232	7,851
Amortization of debt issuance costs	947	1,245	1,224
Convertible Debt [Member]
Interest Expense Recognized [Line Items]
Total interest expense recognized	$ 9,727	$ 12,602	$ 12,200

Commitments, Contingencies and Guarantees	12 Months Ended
Commitments, Contingencies and Guarantees	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Guarantees	Commitments, Contingencies and Guarantees Lease Commitments We lease office space, data centers and certain equipment under non-cancelable operating lease arrangements expiring on various dates through 2029, with various renewal options. Office facilities under operating leases include fixed payments plus, in some cases, scheduled base rent increases over the term of the lease. Certain leases require variable payments of real estate taxes, insurance and operating expenses. See Note 5 "Leases" for additional information on our leases, including the remaining expected lease payments under our operating leases as of December 31, 2019. Litigation During the year ended December 31, 2019, we recorded a $0.4 million litigation loss accrual related to a legal claim that was subsequently settled during the first quarter of 2020. During the year ended December 31, 2018, we reached a settlement agreement related to Huron's claim in a class action lawsuit, resulting in a gain of $2.5 million. These items are recorded in litigation and other losses (gains), net on our consolidated statement of operations. From time to time, we are involved in legal proceedings and litigation arising in the ordinary course of business. As of the date of this Annual Report on Form 10-K, we are not a party to any litigation or legal proceeding that, in the current opinion of management, could have a material adverse effect on our financial position or results of operations. However, due to the risks and uncertainties inherent in legal proceedings, actual results could differ from current expected results. Guarantees Guarantees in the form of letters of credit totaling $1.7 million and $1.6 million were outstanding at December 31, 2019 and 2018, respectively, primarily to support certain office lease obligations. In connection with certain business acquisitions, we may be required to pay post-closing consideration to the sellers if specific financial performance targets are met over a number of years as specified in the related purchase agreements. As of December 31, 2019, the estimated fair value of our outstanding contingent consideration liability was zero. As of December 31, 2018, the total estimated fair value of our contingent consideration liabilities was $11.4 million. To the extent permitted by law, our bylaws and articles of incorporation require that we indemnify our officers and directors against judgments, fines and amounts paid in settlement, including attorneys’ fees, incurred in connection with civil or criminal action or proceedings, as it relates to their services to us if such person acted in good faith. Although there is no limit on the amount of indemnification, we may have recourse against our insurance carrier for certain payments made.

Segment Information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Disaggregation of Revenue [Table Text Block]

The following table illustrates the disaggregation of revenues by billing arrangements, employee types, and timing of revenue recognition, including a reconciliation of the disaggregated revenues to revenues from our three operating segments for the year ended December 31, 2019 and 2018.



	Year Ended December 31, 2019
	Healthcare		Business Advisory		Education		Total
Billing Arrangements
Fixed-fee	$	249,479	$	100,635	$	51,826	$	401,940
Time and expense	55,204		139,610		154,893		349,707
Performance-based	71,051		6,856		—		77,907
Software support, maintenance and subscriptions	23,487		5,407		18,309		47,203
Total	$	399,221	$	252,508	$	225,028	$	876,757

Employee Type ⁽¹⁾
Revenue generated by full-time billable consultants	$	280,915	$	243,350	$	195,844	$	720,109
Revenue generated by full-time equivalents	118,306		9,158		29,184		156,648
Total	$	399,221	$	252,508	$	225,028	$	876,757

Timing of Revenue Recognition
Revenue recognized over time	$	390,884	$	252,508	$	223,673	$	867,065
Revenue recognized at a point in time	8,337		—		1,355		9,692
Total	$	399,221	$	252,508	$	225,028	$	876,757



	Year Ended December 31, 2018
	Healthcare		Business Advisory		Education		Total
Billing Arrangements
Fixed-fee	$	239,263	$	98,119	$	39,586	$	376,968
Time and expense	58,377		128,583		140,824		327,784
Performance-based	42,684		5,405		—		48,089
Software support, maintenance and subscriptions	24,439		4,078		13,767		42,284
Total	$	364,763	$	236,185	$	194,177	$	795,125

Employee Type ⁽¹⁾
Revenue generated by full-time billable consultants	$	247,416	$	225,335	$	170,496	$	643,247
Revenue generated by full-time equivalents	117,347		10,850		23,681		151,878
Total	$	364,763	$	236,185	$	194,177	$	795,125

Timing of Revenue Recognition
Revenue recognized over time	$	356,826	$	236,185	$	190,526	$	783,537
Revenue recognized at a point in time	7,937		—		3,651		11,588
Total	$	364,763	$	236,185	$	194,177	$	795,125

(1)

Full-time billable consultants consist of our full-time professionals who provide consulting services to our clients and are billable to our clients based on the number of hours worked. Full-time equivalent professionals consist of our coaches and their support staff within our Culture and Organizational Excellence solution, consultants who work variable schedules as needed by our clients, employees who provide managed services in our Healthcare segment, and full-time employees who provide software support and maintenance services to our clients.

Components of Segment Information

The tables below set forth information about our operating segments for the years ended December 31, 2019, 2018, and 2017, along with the items necessary to reconcile the segment information to the totals reported in the accompanying consolidated financial statements. We do not present financial information by geographic area because our international operations are immaterial.



	Year Ended December 31,
	2019			2018			2017
Healthcare:
Revenues	$	399,221		$	364,763		$	356,909
Operating income	$	125,724		$	108,060		$	118,761
Segment operating income as a percentage of segment revenues	31.5		%	29.6		%	33.3		%
Business Advisory:
Revenues	$	252,508		$	236,185		$	207,753
Operating income	$	49,695		$	50,625		$	46,600
Segment operating income as a percentage of segment revenues	19.7		%	21.4		%	22.4		%
Education:
Revenues	$	225,028		$	194,177		$	167,908
Operating income	$	55,741		$	48,243		$	40,318
Segment operating income as a percentage of segment revenues	24.8		%	24.8		%	24.0		%
Total Company:
Revenues	$	876,757		$	795,125		$	732,570
Reimbursable expenses	88,717			82,874			75,175
Total revenues and reimbursable expenses	$	965,474		$	877,999		$	807,745

Segment operating income	$	231,160		$	206,928		$	205,679
Items not allocated at the segment level:
Other operating expenses	140,285			122,276			120,718
Litigation and other losses (gains), net	(1,196		)	(2,019		)	1,111
Depreciation and amortization	28,365			34,575			38,213
Goodwill impairment charges ⁽¹⁾	—			—			253,093
Other expense, net	11,215			26,875			15,048
Income (loss) from continuing operations before taxes	$	52,491		$	25,221		$	(222,504	)

(1)

The goodwill impairment charges are not allocated at the segment level because the underlying goodwill asset is reflective of our corporate investment in the segments. We do not include the impact of goodwill impairment charges in our evaluation of segment performance.

Segment Assets



	As of December 31,
Segment Assets:	2019		2018		2017
Healthcare	$	73,019	$	65,133	$	70,097
Business Advisory	59,315		59,017		58,217
Education	38,881		26,990		31,367
Unallocated assets ⁽¹⁾	933,056		898,392		877,247
Total assets	$	1,104,271	$	1,049,532	$	1,036,928

(1)

Unallocated assets include goodwill and intangible assets and our long-term investments, as management does not evaluate these items at the segment level when assessing segment performance or allocating resources. Refer to Note 4 “Goodwill and Intangible Assets" and Note 13 "Fair Value of Financial Instruments" for further information on these assets.

Financing Arrangements - Summary of Carrying Amounts of Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2017
Debt Instrument [Line Items]
Long-term debt	$ 208,853	$ 296,985
Long-term Debt, Current Maturities	529	243,132
Long-term debt, net of current portion	208,324	53,853
Convertible Debt [Member]
Debt Instrument [Line Items]
Long-term debt	0	242,617
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt	205,000	50,000
Promissory Note due 2024 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 3,853	$ 4,368	$ 5,100

Income Taxes

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

On December 22, 2017, the President of the United States signed into law the Tax Cuts and Jobs Act (“2017 Tax Reform”), a tax reform bill which, among other items, reduced the corporate federal income tax rate from 35% to 21% and moved from a worldwide tax system to a territorial system. As a result of the enactment of this legislation during the fourth quarter of 2017, we estimated the remeasurement of our net deferred taxes based on the new lower tax rate, as well as provided for additional one-time income tax expense estimates primarily related to the transition tax on accumulated foreign earnings and elimination of foreign tax credits for dividends that are subject to the 100 percent exemption in our consolidated financial statements as of and for the year ended December 31, 2017. In 2017 and the first nine months of 2018, we recorded provisional amounts for certain enactment-date effects of 2017 Tax Reform by applying the guidance in Staff Accounting Bulletin (“SAB”) No. 118 because we had not yet completed our enactment-date accounting for these effects.

During the fourth quarter of 2018, we completed our accounting for all of the enactment-date income tax effects of 2017 Tax Reform. For the year ended December 31, 2018, we recorded tax expense of $2.2 million related to establishing a valuation allowance for foreign tax credits, a tax benefit of $0.6 million related to the U.S. federal return to provision adjustments for the remeasurement of our net deferred taxes based on the new lower rate and tax expense of $0.2 million related to withholding tax on outside basis differences due to our change in assertion for permanent reinvestment. These amounts are recorded as a component of income tax expense from continuing operations.

2017 Tax Reform subjects a US shareholder to tax on Global Intangible Low-Taxed Income (GILTI) earned by certain foreign subsidiaries. The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or to provide for the tax expense related to GILTI in the year the tax is incurred. We have elected to recognize the tax on GILTI as a period expense in the period the tax is incurred.

The income tax expense for continuing operations for the years ended December 31, 2019, 2018, and 2017 consists of the following:



	Year Ended December 31,
	2019			2018			2017
Current:
Federal	$	125		$	(1,611	)	$	(635	)
State	2,014			286			545
Foreign	(422		)	1,885			2,040
Total current	1,717			560			1,950
Deferred:
Federal	7,467			9,742			(46,103		)
State	1,610			2,008			(6,576		)
Foreign	(282		)	(1,033		)	(1,270		)
Total deferred	8,795			10,717			(53,949		)
Income tax expense for continuing operations	$	10,512		$	11,277		$	(51,999	)

The components of income from continuing operations before taxes were as follows:



	Year Ended December 31,
	2019			2018		2017
U.S.	$	53,898		$	17,025	$	(221,137	)
Foreign	(1,407		)	8,196		(1,367		)
Total	$	52,491		$	25,221	$	(222,504	)

A reconciliation of the U.S. statutory income tax rate to our effective tax rate for continuing operations is as follows:



	Year Ended December 31,
	2019		2018		2017
Percent of pretax income from continuing operations:
At U.S. statutory tax rate	21.0	%	21.0	%	35.0	%
State income taxes, net of federal benefit	6.1		7.2		2.7
Disallowed executive compensation	2.0		2.5		—
Meals and entertainment	1.6		2.0		(0.3	)
Tax credits	(3.1	)	(1.4	)	0.2
Valuation allowance	(2.9	)	6.9		(0.2	)
Realized investment (gains) losses	(1.8	)	1.3		0.4
Net tax benefit related to “check-the-box” election	(1.4	)	—		1.2
Stock-based compensation	(1.1	)	4.9		(0.8	)
Foreign source income	(0.5	)	(1.7	)	0.1
Change in fair value of contingent consideration liabilities	—		2.4		—
Global intangible low-taxed income	—		2.1		—
Transition tax on accumulated foreign earnings, net of credits	—		0.8		(0.3	)
U.S. federal rate change	—		(2.3	)	(3.4	)
Goodwill impairment charges	—		—		(10.2	)
Other	0.1		(1.0	)	(1.0	)
Effective income tax rate for continuing operations	20.0	%	44.7	%	23.4	%

The effective tax rate for discontinued operations in 2019 was 26.0%, based on a tax benefit of $0.1 million and pretax loss from discontinued operations of $0.3 million, and was higher than the statutory tax rate primarily due to state income taxes. The effective tax rate for discontinued operations in 2018 was 26.7%, based on tax expense of $0.1 million and a pretax loss from discontinued operations of $0.4 million, and was higher than the statutory tax rate primarily due to state income taxes. The effective tax rate for discontinued operations in

2017 was 60.0%, based on tax expense of $0.6 million and a pretax income from discontinued operations of $1.0 million, and was higher than the statutory tax rate primarily due the settlement of foreign tax audits.

The net deferred tax liabilities for continuing operations at December 31, 2019 and 2018 consisted of the following:



	As of December 31,
	2019			2018
Deferred tax assets:
Operating lease liabilities	$	20,541		$	—
Accrued payroll and other liabilities	12,289			6,737
Share-based compensation	6,970			6,150
Tax credits	465			3,548
Net operating loss carryforwards	280			2,247
Deferred lease incentives	—			4,100
Restructuring charge liability	—			639
Other	1,451			1,466
Total deferred tax assets	41,996			24,887
Valuation allowance	(1,016		)	(3,143		)
Net deferred tax assets	40,980			21,744
Deferred tax liabilities:
Intangibles and goodwill	(16,421		)	(6,665		)
Operating lease right-of-use assets	(14,675		)	—
Convertible debt investment	(5,608		)	(5,934		)
Software development costs	(4,496		)	(1,655		)
Property and equipment	(4,039		)	(3,604		)
Prepaid expenses	(2,183		)	(1,794		)
Other	(483		)	(671		)
Total deferred tax liabilities	(47,905		)	(20,323		)
Net deferred tax asset (liability) for continuing operations	$	(6,925	)	$	1,421

As of December 31, 2019 and 2018, we had valuation allowances of $1.0 million and $3.1 million, respectively, primarily due to uncertainties relating to the ability to realize deferred tax assets recorded for foreign losses and tax credits. The decrease in valuation allowances in 2019 primarily related to a decrease in the valuation allowance for foreign tax credits.

We have federal and state tax credit carryforwards of $0.5 million which will begin to expire in 2020, if not utilized. We also have foreign net operating losses of $0.3 million, which carryforward indefinitely. We have no federal or state net operating loss carryforwards as of December 31, 2019.

We recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate resolution.

A reconciliation of our beginning and ending amount of unrecognized tax benefits is as follows:



	Unrecognized Tax Benefits
Balance at January 1, 2017	$	3,340
Decrease due to lapse of statute of limitations	(2,410		)
Decrease based on tax positions related to prior years	(117		)
Balance at December 31, 2017	813
Additions based on tax positions related to prior years	115
Decrease due to lapse of statute of limitations	(28		)
Balance at December 31, 2018	900
Decrease due to settlements of prior year tax positions	(115		)
Decrease due to lapse of statute of limitations	(735		)
Balance at December 31, 2019	$	50

As of December 31, 2019, we had $0.1 million of unrecognized tax benefits which would affect the effective tax rate of continuing operations if recognized.

As of December 31, 2019 and 2018, we had less than $0.1 million and $0.1 million accrued for the potential payment of interest and penalties. Accrued interest and penalties are recorded as a component of provision for income taxes on our consolidated statement of operations.

We file income tax returns with federal, state, local and foreign jurisdictions. Tax years 2016 through 2018 are subject to future examinations by federal tax authorities. Tax years 2013 through 2018 are subject to future examinations by state and local tax authorities. Our foreign income tax filings are subject to future examinations by the local foreign tax authorities for tax years 2014 through 2018. Currently, we are not under audit by any tax authority.

Acquisitions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Mar. 01, 2017	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Effective date of acquisition	Mar. 01, 2017
Outstanding stock from the existing shareholders	100.00%
Contingent consideration related to business acquisitions		$ 0				$ 212				$ 0	$ 212	$ 15,489
Total revenues and reimbursable expenses		255,199	$ 242,925	$ 244,288	$ 223,062	228,680	$ 219,744	$ 218,277	$ 211,298	965,474	877,999	807,745
Operating income (loss)		$ 18,499	$ 20,576	$ 17,875	$ 6,756	$ 17,075	$ 13,561	$ 19,138	$ 2,322	63,706	52,096	(207,456)
Amortization of Intangible Assets										$ 17,800	$ 24,000	35,000
Innosight Holdings, LLC [Member]
Business Acquisition [Line Items]
Acquisition date fair value of the consideration	$ 113,607
Borrowings under credit facility	$ 89,000
Common stock issued	221,558
Acquisition date fair value	$ 9,560
Share Price	$ 43.15
Contingent consideration related to business acquisitions	$ 12,050
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 35,000
Weighted-average amortization period	5 years 7 months 6 days
Goodwill expected to be deductible for income tax purpose	$ 87,400
Total revenues and reimbursable expenses												34,300
Operating income (loss)												(900)
Amortization of Intangible Assets												3,400
Expenses incurred												1,700
Pro Forma Adjustments, Additional Expense												$ 600

Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 1,042,756	$ 1,041,339	$ 1,041,826
Accumulated impairment losses	(396,076)	(396,076)	(396,076)
Goodwill, net beginning balance	645,263	645,750
Goodwill recorded in connection with business combinations	1,060	186
Foreign currency translation	357	(673)
Goodwill, net ending balance	646,680	645,263
Health Care [Member]
Goodwill [Line Items]
Goodwill	636,810	636,810	636,810
Accumulated impairment losses	(208,081)	(208,081)	(208,081)
Goodwill, net beginning balance	428,729	428,729
Goodwill recorded in connection with business combinations	0	0
Foreign currency translation	0	0
Goodwill, net ending balance	428,729	428,729
Education [Member]
Goodwill [Line Items]
Goodwill	103,889	102,829	102,829
Accumulated impairment losses	0	0	0
Goodwill, net beginning balance	102,829	102,829
Goodwill recorded in connection with business combinations	1,060	0
Foreign currency translation	0	0
Goodwill, net ending balance	103,889	102,829
Business Advisory [Member]
Goodwill [Line Items]
Goodwill	302,057	301,700	302,187
Accumulated impairment losses	(187,995)	(187,995)	$ (187,995)
Goodwill, net beginning balance	113,705	114,192
Goodwill recorded in connection with business combinations	0	186
Foreign currency translation	357	(673)
Goodwill, net ending balance	$ 114,062	$ 113,705

Income Taxes - Components of Income from Continuing Operations Before Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S.	$ 53,898	$ 17,025	$ (221,137)
Foreign	(1,407)	8,196	(1,367)
Income (loss) from continuing operations before taxes	$ 52,491	$ 25,221	$ (222,504)

Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Intangible assets
Gross carrying amount	$ 125,221	$ 137,229
Accumulated Amortization	$ 93,596	89,372
Customer contracts [Member]
Intangible assets
Useful life in years	2 years
Gross carrying amount	$ 800	0
Accumulated Amortization	52	0
Customer relationships [Member]
Intangible assets
Gross carrying amount	87,577	98,235
Accumulated Amortization	$ 61,882	60,462
Customer relationships [Member] \| Minimum [Member]
Intangible assets
Useful life in years	3 years
Customer relationships [Member] \| Maximum [Member]
Intangible assets
Useful life in years	13 years
Non-competition Agreements [Member]
Intangible assets
Useful life in years	5 years
Gross carrying amount	$ 2,220	3,650
Accumulated Amortization	1,447	2,241
Trade names [Member]
Intangible assets
Gross carrying amount	28,930	28,930
Accumulated Amortization	$ 25,894	23,181
Trade names [Member] \| Minimum [Member]
Intangible assets
Useful life in years	5 years
Trade names [Member] \| Maximum [Member]
Intangible assets
Useful life in years	6 years
Technology-Based Intangible Assets [Member]
Intangible assets
Gross carrying amount	$ 5,694	5,694
Accumulated Amortization	$ 4,321	2,842
Technology-Based Intangible Assets [Member] \| Minimum [Member]
Intangible assets
Useful life in years	3 years
Technology-Based Intangible Assets [Member] \| Maximum [Member]
Intangible assets
Useful life in years	5 years
Off-Market Favorable Lease [Member]
Intangible assets
Useful life in years	3 years
Gross carrying amount	$ 0	720
Accumulated Amortization	$ 0	$ 646

Selected Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Table Text Block]



	Quarter Ended
2019	Mar. 31			Jun. 30			Sep. 30			Dec. 31
Revenues	$	204,445		$	220,754		$	219,289		$	232,269
Reimbursable expenses	18,617			23,534			23,636			22,930
Total revenues and reimbursable expenses	223,062			244,288			242,925			255,199
Gross profit	65,496			77,832			75,158			77,315
Operating income	6,756			17,875			20,576			18,499
Net income from continuing operations	3,350			10,569			13,706			14,354
Loss from discontinued operations, net of tax	(46		)	(97		)	(52		)	(41		)
Net income	3,304			10,472			13,654			14,313
Net earnings per basic share:
Net income from continuing operations	$	0.15		$	0.48		$	0.62		$	0.65
Loss from discontinued operations, net of tax	—			—			—			—
Net income	$	0.15		$	0.48		$	0.62		$	0.65
Net earnings per diluted share:
Net income from continuing operations	$	0.15		$	0.47		$	0.61		$	0.63
Loss from discontinued operations, net of tax	—			—			—			—
Net income	$	0.15		$	0.47		$	0.61		$	0.63
Weighted average shares used in calculating earnings per share:
Basic	21,868			21,997			22,052			22,051
Diluted	22,311			22,400			22,561			22,676



	Quarter Ended
2018	Mar. 31			Jun. 30			Sep. 30		Dec. 31
Revenues	$	193,679		$	197,544		$	198,448	$	205,454
Reimbursable expenses	17,619			20,733			21,296		23,226
Total revenues and reimbursable expenses	211,298			218,277			219,744		228,680
Gross profit	59,745			68,820			68,893		71,834
Operating income	2,322			19,138			13,561		17,075
Net income (loss) from continuing operations	(3,222		)	5,862			8,249		3,055
Income (loss) from discontinued operations, net of tax	(42		)	(490		)	228		6
Net income (loss)	(3,264		)	5,372			8,477		3,061
Net earnings (loss) per basic share:
Net income (loss) from continuing operations	$	(0.15	)	$	0.27		$	0.38	$	0.14
Income (loss) from discontinued operations, net of tax	—			(0.02		)	0.01		—
Net income (loss)	$	(0.15	)	$	0.25		$	0.39	$	0.14
Net earnings (loss) per diluted share:
Net income (loss) from continuing operations	$	(0.15	)	$	0.27		$	0.37	$	0.14
Income (loss) from discontinued operations, net of tax	—			(0.02		)	0.01		—
Net income (loss)	$	(0.15	)	$	0.25		$	0.38	$	0.14
Weighted average shares used in calculating earnings per share:
Basic	21,592			21,709			21,745		21,774
Diluted	21,592			21,918			22,110		22,294

Leases Schedule of Operating Lease Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating Lease, Payments	$ 13,902
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 12,842
Operating Lease, Weighted Average Remaining Lease Term	7 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	4.30%

Revenues Revenue - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract with Customer, Performance Obligation Satisfied in Previous Period		$ 10,800
Revenue, Remaining Performance Obligation, Amount	$ 90,100
Change in Contract with Customer, Asset and Liability [Abstract]
Contract with Customer, Asset, after Allowance for Credit Loss	12,600	9,100
Contract Asset, Period Increase (Decrease)	3,500
Deferred revenues	28,443	28,130
Deferred Revenue, Period Increase (Decrease)	300
Deferred Revenue, Revenue Recognized	22,800	23,500
Change in Estimated Variable Consideration [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract with Customer, Performance Obligation Satisfied in Previous Period	1,000	7,200
Release of Allowance [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract with Customer, Performance Obligation Satisfied in Previous Period	$ 2,800	$ 3,600

Segment Information - Segment Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Assets:
Total assets	$ 1,104,271	$ 1,049,532	$ 1,036,928
Segment Reconciling Items [Member]
Segment Assets:
Total assets	933,056	898,392	877,247
Health Care [Member] \| Operating Segments [Member]
Segment Assets:
Total assets	73,019	65,133	70,097
Business Advisory [Member] \| Operating Segments [Member]
Segment Assets:
Total assets	59,315	59,017	58,217
Education [Member] \| Operating Segments [Member]
Segment Assets:
Total assets	$ 38,881	$ 26,990	$ 31,367

Derivative Instruments and Hedging Activity

12 Months Ended

Dec. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activity

On June 22, 2017, we entered into a forward interest rate swap agreement effective August 31, 2017 and ending August 31, 2022, with a notional amount of $50.0 million. We entered into this derivative instrument to hedge against the interest rate risks of our variable-rate borrowings. Under the terms of the interest rate swap agreement, we receive from the counterparty interest on the notional amount based on one month LIBOR and we pay to the counterparty a fixed rate of 1.900%.

We recognize all derivative instruments as either assets or liabilities at fair value on the balance sheet. We have designated this derivative instrument as a cash flow hedge. Therefore, changes in the fair value of the derivative instrument are recorded to other comprehensive income (“OCI”) to the extent effective and reclassified into interest expense upon settlement. As of December 31, 2019, it was anticipated that $0.1 million of the losses, net of tax, currently recorded in accumulated other comprehensive income will be reclassified into earnings within the next 12 months.

The table below sets forth additional information relating to our interest rate swap designated as a cash flow hedging instrument as of December 31, 2019 and 2018.



	Fair Value (Derivative Asset and Liability) As of December 31,
Balance Sheet Location	2019		2018
Prepaid expenses and other current assets	$	—	$	302
Other non-current assets	$	—	$	451
Accrued expenses	$	159	$	—
Deferred compensation and other liabilities	$	387	$	—

All of our derivative instruments are transacted under the International Swaps and Derivatives Association (ISDA) master agreements. These agreements permit the net settlement of amounts owed in the event of default and certain other termination events. Although netting is permitted, it is our policy to record all derivative assets and liabilities on a gross basis on our consolidated balance sheet.

We do not use derivative instruments for trading or other speculative purposes. Refer to Note 14 “Other Comprehensive Income (Loss)” for additional information on our derivative instrument.

Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)		3 Months Ended	12 Months Ended
	Jun. 30, 2017	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2014	Jul. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Document Period End Date			Dec. 31, 2019
Long-term Investments			$ 54,541,000	$ 50,429,000
Aggregate principal amount					$ 250,000,000
Debt Instrument, Interest Rate, Stated Percentage					1.25%
Convertible Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate principal amount				250,000,000	$ 250,000,000
Debt Instrument, Convertible, Carrying Amount of Equity Component			$ 39,287,000	$ 39,287,000
Debt Instrument, Interest Rate, Stated Percentage					1.25%
Promissory Note due 2024 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Maturity Date	Mar. 01, 2024
Convertible Debt Securities [Member] \| Shorelight Holdings Llc [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Investments		$ 13,000,000.0				$ 27,900,000
Debt Instrument, Maturity Date		Jan. 17, 2024	Jul. 01, 2021
Debt Instrument, Interest Rate, Stated Percentage		1.69%
Preferred Stock [Member] \| Medically Home Group Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Investments			$ 5,000,000.0

Summary of Significant Accounting Policies (Details)	3 Months Ended	12 Months Ended
Summary of Significant Accounting Policies (Details)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) Reporting_Unit Segment Billing	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2014 USD ($)
Cash and Cash Equivalents [Line Items]
Foreign Currency Transaction Gain (Loss), Realized		$ 200,000	$ (500,000)	$ (400,000)
Cumulative Effect on Retained Earnings, Net of Tax	$ 2,000,000.0
Document Period End Date		Dec. 31, 2019
Number of billing arrangements for revenue recognition \| Billing		4
Capitalized Contract Cost, Amortization		$ 300,000	200,000
Capitalized Contract Cost, Net		800,000	400,000
Capitalized Computer Software, Accumulated Amortization		5,900,000	2,900,000
Capitalized Computer Software, Gross		21,500,000	10,200,000
Amortized capitalized software development costs		$ 3,000,000.0	1,400,000	800,000
Number of Reporting Units \| Reporting_Unit		6
Sponsorship and advertising costs		$ 8,400,000	$ 7,900,000	$ 6,600,000
Aggregate principal amount					$ 250,000,000
Debt Instrument, Interest Rate, Stated Percentage					1.25%
Number of Operating Segments \| Segment		3
Maximum [Member]
Cash and Cash Equivalents [Line Items]
Cash and Cash Equivalent maturity period		3 months
Computers, related equipment and software [Member] \| Maximum [Member]
Cash and Cash Equivalents [Line Items]
Depreciated over and estimated useful life		P4Y
Computers, related equipment and software [Member] \| Minimum [Member]
Cash and Cash Equivalents [Line Items]
Depreciated over and estimated useful life		P2Y
Furniture and fixtures [Member]
Cash and Cash Equivalents [Line Items]
Depreciated over and estimated useful life		P5Y
Aircraft [Domain]
Cash and Cash Equivalents [Line Items]
Depreciated over and estimated useful life		P10Y

Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments, beginning balance	$ (665)	$ 1,149	$ (453)
Foreign currency translation adjustment, net of tax	99	(1,814)	1,602
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax			4,231
Foreign currency translation adjustments, ending balance	(566)	(665)	1,149
Unrealized loss on investment, beginning balance	16,584	8,812	4,088
Unrealized loss on investments	(702)	7,772	4,724
Unrealized loss on investment, ending balance	15,882	16,584	8,812
Unrealized gain (loss) on cash flow hedges, beginning balance	576	409	(20)
Change in fair value	(819)	197	366
Reclassification adjustment into earnings	(137)	(30)	69
Unrealized gain (loss) on cash flow hedges, ending balance	$ (380)	$ 576	409
Retained Earnings [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			(500)
Convertible Debt Securities [Member] \| Retained Earnings [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			493
Interest Rate Swap [Member] \| Retained Earnings [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			$ (6)

Income Taxes - Income Tax Expense for Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 125	$ (1,611)	$ (635)
State	2,014	286	545
Foreign	(422)	1,885	2,040
Total current	1,717	560	1,950
Deferred:
Federal	7,467	9,742	(46,103)
State	1,610	2,008	(6,576)
Foreign	(282)	(1,033)	(1,270)
Total deferred	8,795	10,717	(53,949)
Income tax expense for continuing operations	$ 10,512	$ 11,277	$ (51,999)

Financing Arrangements

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Financing Arrangements

A summary of the carrying amounts of our debt follows:



	As of December 31,
	2019			2018
1.25% convertible senior notes due 2019	$	—		$	242,617
Senior secured credit facility	205,000			50,000
Promissory note due 2024	3,853			4,368
Total long-term debt	$	208,853		$	296,985
Current maturities of long-term debt	(529		)	(243,132		)
Long-term debt, net of current portion	$	208,324		$	53,853

Below is a summary of the scheduled remaining principal payments of our debt as of December 31, 2019.



	Principal Payments of Long-Term Debt
2020	$	529
2021	$	544
2022	$	559
2023	$	575
2024	$	206,646

Convertible Notes

In September 2014, the Company issued $250 million principal amount of 1.25% convertible senior notes due 2019 (the “Convertible Notes”) in a private offering. The Convertible Notes were governed by the terms of an indenture between the Company and U.S. Bank National Association, as Trustee (the “Indenture”). The Convertible Notes were senior unsecured obligations of the Company and paid interest semi-annually on April 1 and October 1 of each year at an annual rate of 1.25%. The Convertible Notes matured on October 1, 2019. Upon maturity, we refinanced $217.0 million of the principal amount of the outstanding Convertible Notes with the borrowing capacity available under our revolving credit facility and funded the remaining $33.0 million principal payment with cash on hand.

Prior to maturity, upon conversion, the Convertible Notes would have been settled, at our election, in cash, shares of the Company’s common stock, or a combination of cash and shares of the Company’s common stock. On October 1, 2019, one holder of the Convertible Notes converted their holding, which we settled in cash and resulted in an immaterial gain on conversion.

Upon issuance, we separated the Convertible Notes into liability and equity components. The carrying amount of the liability component was determined by measuring the fair value of a similar liability that does not have an associated convertible feature, assuming our non-

convertible debt borrowing rate. The carrying value of the equity component representing the conversion option, which was recognized as a debt discount, was determined by deducting the fair value of the liability component from the proceeds of the Convertible Notes. The debt discount was amortized to interest expense using an effective interest rate of 4.751% over the term of the Convertible Notes. The equity component was not remeasured as it continued to meet the conditions for equity classification.

The transaction costs related to the issuance of the Convertible Notes were separated into liability and equity components based on their relative values, as determined above. Transaction costs attributable to the liability component were recorded as a deduction to the carrying amount of the liability and amortized to interest expense over the term of the Convertible Notes; and transaction costs attributable to the equity component were netted with the equity component of the Convertible Notes in stockholders’ equity. Total debt issuance costs were approximately $7.3 million, of which $6.2 million was allocated to liability issuance costs and $1.1 million was allocated to equity issuance costs.

As of December 31, 2018, the Convertible Notes consisted of the following:



	As of December 31, 2018
Liability component:
Proceeds	$	250,000
Less: debt discount, net of amortization	(6,436		)
Less: debt issuance costs, net of amortization	(947		)
Net carrying amount	$	242,617
Equity component ⁽¹⁾	$	39,287


(1)	Included in additional paid-in capital on the consolidated balance sheet.

The following table presents the amount of interest expense recognized related to the Convertible Notes for the periods presented.



	Year Ended December 31,
	2019		2018		2017
Contractual interest coupon	$	2,344	$	3,125	$	3,125
Amortization of debt discount	6,436		8,232		7,851
Amortization of debt issuance costs	947		1,245		1,224
Total interest expense	$	9,727	$	12,602	$	12,200

In connection with the issuance of the Convertible Notes, we entered into convertible note hedge transactions and warrant transactions. The convertible note hedge transactions were intended to reduce the potential future economic dilution associated with the conversion of the Convertible Notes and, combined with the warrants, effectively raised the price at which economic dilution would occur from the initial conversion price of approximately $79.89 to approximately $97.12 per share. For purposes of the computation of diluted earnings per share in accordance with GAAP, dilution would occur when the average share price of our common stock for a given period exceeds the conversion price of the Convertible Notes, which initially is equal to approximately $79.89 per share. The convertible note hedge transactions and warrant transactions are discussed separately below.

•

Convertible Note Hedge Transactions. In connection with the issuance of the Convertible Notes, the Company entered into convertible note hedge transactions whereby the Company had call options to purchase a total of approximately 3.1 million shares of the Company’s common stock, which is the number of shares initially issuable upon conversion of the Convertible Notes in full, at a price of approximately $79.89, which corresponded to the initial conversion price of the Convertible Notes, subject to customary anti-dilution adjustments substantially similar to those in the Convertible Notes. The convertible note hedge transactions were exercisable upon conversion of the Convertible Notes and expired in the third quarter of 2019. We paid an aggregate amount of $42.1 million for the convertible note hedge transactions, which was recorded as additional paid-in capital on the consolidated balance sheet. The convertible note hedge transactions were separate transactions and were not part of the terms of the Convertible Notes.

•

Warrants. In connection with the issuance of the Convertible Notes, the Company sold warrants whereby the holders of the warrants have the option to purchase a total of approximately 3.1 million shares of the Company’s common stock at a strike price of approximately $97.12. The warrants will expire incrementally on 100 different dates from January 6, 2020 to May 28, 2020 and are exercisable at each such expiry date. If the average market value per share of our common stock for the reporting period exceeds the strike price of the warrants, the warrants will have a dilutive effect on our earnings per share. We received

aggregate proceeds of $23.6 million from the sale of the warrants, which was recorded as additional paid-in capital on the consolidated balance sheets. The warrants are separate transactions and are not part of the terms of the Convertible Notes or the convertible note hedge transactions.

The Company recorded an initial deferred tax liability of $15.4 million in connection with the debt discount associated with the Convertible Notes and recorded an initial deferred tax asset of $16.5 million in connection with the convertible note hedge transactions. The deferred tax liability and deferred tax asset were included in deferred income taxes, net on the consolidated balance sheets.

Senior Secured Credit Facility

The Company has a $600 million senior secured revolving credit facility, subject to the terms of a Second Amended and Restated Credit Agreement dated as of March 31, 2015, as amended to date (as amended and modified the "Amended Credit Agreement"), that becomes due and payable in full upon maturity on September 27, 2024. The Amended Credit Agreement provides the option to increase the revolving credit facility or establish term loan facilities in an aggregate amount of up to $150 million, subject to customary conditions and the approval of any lender whose commitment would be increased, resulting in a maximum available principal amount under the Amended Credit Agreement of $750 million. The initial borrowings under the Amended Credit Agreement were used to refinance borrowings outstanding under a prior credit agreement, and future borrowings under the Amended Credit Agreement may be used for working capital, capital expenditures, acquisitions of businesses, share repurchases, and general corporate purposes.

Fees and interest on borrowings vary based on our Consolidated Leverage Ratio (as defined in the Amended Credit Agreement). At our option, borrowings under the Amended Credit Agreement will bear interest at one, two, three or six-month LIBOR or an alternate base rate, in each case plus the applicable margin. The applicable margin will fluctuate between 1.125% per annum and 1.875% per annum, in the case of LIBOR borrowings, or between 0.125% per annum and 0.875% per annum, in the case of base rate loans, based upon our Consolidated Leverage Ratio at such time.

Amounts borrowed under the Amended Credit Agreement may be prepaid at any time without premium or penalty. We are required to prepay the amounts outstanding under the Amended Credit Agreement in certain circumstances. In addition, we have the right to permanently reduce or terminate the unused portion of the commitments provided under the Amended Credit Agreement at any time.

The loans and obligations under the Amended Credit Agreement are secured pursuant to a Second Amended and Restated Security Agreement and a Second Amended and Restated Pledge Agreement (the “Pledge Agreement”) with Bank of America, N.A. as collateral agent, pursuant to which the Company and the subsidiary guarantors grant Bank of America, N.A., for the ratable benefit of the lenders under the Amended Credit Agreement, a first-priority lien, subject to permitted liens, on substantially all of the personal property assets of the Company and the subsidiary guarantors, and a pledge of 100% of the stock or other equity interests in all domestic subsidiaries and 65% of the stock or other equity interests in each “material first-tier foreign subsidiary” (as defined in the Pledge Agreement).

The Amended Credit Agreement contains usual and customary representations and warranties; affirmative and negative covenants, which include limitations on liens, investments, additional indebtedness, and restricted payments; and two quarterly financial covenants as follows: (i) a maximum Consolidated Leverage Ratio (defined as the ratio of debt to consolidated EBITDA) of 3.75 to 1.00; however the maximum permitted Consolidated Leverage Ratio will increase to 4.00 to 1.00 upon the occurrence of certain transactions, and (ii) a minimum Consolidated Interest Coverage Ratio (defined as the ratio of consolidated EBITDA to interest) of 3.50 to 1.00. Consolidated EBITDA for purposes of the financial covenants is calculated on a continuing operations basis and includes adjustments to add back non-cash goodwill impairment charges, share-based compensation costs, certain non-cash restructuring charges, pro forma historical EBITDA for businesses acquired, and other specified items in accordance with the Amended Credit Agreement. At December 31, 2019, we were in compliance with these financial covenants with a Consolidated Leverage Ratio of 1.64 to 1.00 and a Consolidated Interest Coverage Ratio of 15.29 to 1.00.

Borrowings outstanding under the Amended Credit Agreement at December 31, 2019 totaled $205.0 million. These borrowings carried a weighted average interest rate of 3.0%, including the impact of the interest rate swap described in Note 12 “Derivative Instruments and Hedging Activity." Borrowings outstanding under the Amended Credit Agreement at December 31, 2018 were $50.0 million and carried a weighted average interest rate of 3.7%, including the impact of the interest rate swap described in Note 12 "Derivative Instruments and Hedging Activity." The borrowing capacity under the revolving credit facility is reduced by any outstanding borrowings under the revolving credit facility and outstanding letters of credit. At December 31, 2019, we had outstanding letters of credit totaling $1.7 million, which are primarily used as security deposits for our office facilities. As of December 31, 2019, the unused borrowing capacity under the revolving credit facility was $393.3 million.

Promissory Note due 2024

In 2017, in conjunction with our purchase of an aircraft related to the acquisition of Innosight, we assumed, from the sellers of the aircraft, a promissory note with an outstanding principal balance of $5.1 million. The principal balance of the promissory note is subject to scheduled monthly principal payments until the maturity date of March 1, 2024, at which time a final payment of $1.5 million, plus any accrued and unpaid interest, will be due. Under the terms of the promissory note, we will pay interest on the outstanding principal amount at a rate of one month LIBOR plus 1.97% per annum. The obligations under the promissory note are secured pursuant to a Loan and Aircraft Security Agreement with Banc of America Leasing & Capital, LLC, which grants the lender a first priority security interest in the aircraft. At December 31, 2019, the outstanding principal amount of the promissory note was $3.9 million. As of December 31, 2019, the aircraft had a carrying amount of $5.1 million. At December 31, 2018, the outstanding principal amount of the promissory note was $4.4 million, and the aircraft had a carrying amount of $5.8 million.

Other Comprehensive Income (Loss) Other Comprehensive Income (Loss) - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Tax	$ 0	$ 0	$ 0
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	185	(2,753)	(998)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	295	(63)	(106)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	$ 48	$ (10)	$ (46)

Derivative Instruments and Hedging Activity - Fair Value Interest Rate Swaps Designated as Cash Flow Hedging Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Prepaid Expenses and Other Current Assets [Member]
Fair Value interest rate swaps designated as cash flow hedging instruments
Fair value (derivative asset and liability)	$ 0	$ 302
Other Noncurrent Assets [Member]
Fair Value interest rate swaps designated as cash flow hedging instruments
Fair value (derivative asset and liability)	0	451
Accrued Liabilities [Member]
Fair Value interest rate swaps designated as cash flow hedging instruments
Fair value (derivative asset and liability)	159	0
Other Noncurrent Liabilities [Member]
Fair Value interest rate swaps designated as cash flow hedging instruments
Fair value (derivative asset and liability)	$ 387	$ 0

Employee Benefit and Deferred Compensation Plans	12 Months Ended
Employee Benefit and Deferred Compensation Plans	Dec. 31, 2019
Postemployment Benefits [Abstract]
Employee Benefit and Deferred Compensation Plans	Employee Benefit and Deferred Compensation Plans We sponsor a qualified defined contribution 401(k) plan covering substantially all of our employees. Under the plan, employees are entitled to make pretax contributions and/or Roth post-tax contributions up to the annual maximums established by the Internal Revenue Service. We match an amount equal to the employees’ contributions up to 6% of the employees’ eligible earnings. Our matching contributions for the years ended December 31, 2019, 2018, and 2017 were $22.8 million, $20.8 million, and $20.0 million, respectively. We have a non-qualified deferred compensation plan (the “Plan”) that is administered by our board of directors or a committee designated by the board of directors. Under the Plan, members of the board of directors and a select group of our employees may elect to defer the receipt of their director retainers and meeting fees or base salary and bonus, as applicable. Additionally, we may credit amounts to a participant’s deferred compensation account in accordance with employment or other agreements entered into between us and the participant. At our sole discretion, we may, but are not required to, credit any additional amount we desire to any participant’s deferred compensation account. Amounts credited are subject to vesting schedules set forth in the Plan, employment agreement, or any other agreement entered into between us and the participant. The deferred compensation liability at December 31, 2019 and 2018 was $27.5 million and $18.4 million, respectively. This deferred compensation liability is funded by the Plan assets.

Equity Incentive Plans - Schedule of Restricted Stock Activity (Detail) - Restricted Stock Awards [Member] - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Total
Nonvested stock, number of shares, beginning balance	758
Granted, number of shares	353
Vested, number of shares	(294)
Forfeited, number of shares	(31)
Nonvested stock, number of shares, ending balance	786	758
Weighted Average Grant Date Fair Value (in dollars)
Nonvested stock, weighted average grant date fair value, beginning balance (in USD per share)	$ 43.08
Weighted average grant date fair value (in USD per share)	48.57	$ 38.45	$ 42.11
Vested, weighted average grant date fair value (in USD per share)	46.25
Forfeited, weighted average grant date fair value (in USD per share)	45.24
Nonvested stock, weighted average grant date fair value, ending balance (in USD per share)	$ 44.27	$ 43.08
Two Thousand And Twelve Plan [Member]
Total
Nonvested stock, number of shares, beginning balance	747
Granted, number of shares	341
Vested, number of shares	(284)
Forfeited, number of shares	(30)
Nonvested stock, number of shares, ending balance	774	747
Stock Ownership Participation Program [Member]
Total
Nonvested stock, number of shares, beginning balance	11
Granted, number of shares	12
Vested, number of shares	(10)
Forfeited, number of shares	(1)
Nonvested stock, number of shares, ending balance	12	11

Capital Structure	12 Months Ended
Capital Structure	Dec. 31, 2019
Equity [Abstract]
Capital Structure	Capital Structure Preferred Stock We are authorized to issue up to 50,000,000 shares of preferred stock. Our certificate of incorporation authorizes our board of directors, without any further stockholder action or approval, to issue these shares in one or more classes or series, to establish from time to time the number of shares to be included in each class or series, and to fix the rights, preferences and privileges of the shares of each wholly unissued class or series and any of its qualifications, limitations or restrictions. As of December 31, 2019 and 2018, no such preferred stock has been approved or issued. Common Stock We are authorized to issue up to 500,000,000 shares of common stock, par value $.01 per share. The holders of common stock are entitled to one vote for each share held of record on each matter submitted to a vote of stockholders. Subject to the rights and preferences of the holders of any series of preferred stock that may at the time be outstanding, holders of common stock are entitled to such dividends as our board of directors may declare. In the event of any liquidation, dissolution or winding-up of our affairs, after payment of all of our debts and liabilities and subject to the rights and preferences of the holders of any series of preferred stock that may at the time be outstanding, holders of common stock will be entitled to receive the distribution of any of our remaining assets.

Earnings Per Share - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accelerated Share Repurchases [Line Items]
Stock Repurchased and Retired During Period, Value	$ 14,219,000
Share Repurchases Initiated but not yet Settled	1,234,000	$ 0	$ 0
Share Repurchase Program [Member]
Accelerated Share Repurchases [Line Items]
Share repurchase authorized amount	$ 125,000,000
Shares repurchased	210,437
Stock Repurchased and Retired During Period, Value	$ 14,200,000
Share Repurchases Initiated but not yet Settled	1,200,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 20,900,000

Acquisitions - Summary of Supplemental Pro Forma Consolidated Results of Operations (Details) - Innosight Holdings, LLC [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) $ / shares
Business Combination, Separately Recognized Transactions [Line Items]
Business acquisition, pro forma revenue \| $	$ 741,695
Business acquisition, pro forma net income (loss) \| $	$ (167,346)
Business acquisition, pro forma earnings per share, basic (in USD per share) \| $ / shares	$ (7.79)
Business acquisition, pro forma earnings per share, diluted (in USD per share) \| $ / shares	$ (7.79)

Derivative Instruments and Hedging Activity (Tables)

12 Months Ended

Dec. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Value Interest Rate Swaps Designated as Cash Flow Hedging Instruments

The table below sets forth additional information relating to our interest rate swap designated as a cash flow hedging instrument as of December 31, 2019 and 2018.



	Fair Value (Derivative Asset and Liability) As of December 31,
Balance Sheet Location	2019		2018
Prepaid expenses and other current assets	$	—	$	302
Other non-current assets	$	—	$	451
Accrued expenses	$	159	$	—
Deferred compensation and other liabilities	$	387	$	—

Segment Information - Components of Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of Segment Information
Operating income (loss)	$ 18,499	$ 20,576	$ 17,875	$ 6,756	$ 17,075	$ 13,561	$ 19,138	$ 2,322	$ 63,706	$ 52,096	$ (207,456)
Revenue from Contract with Customer, Including Assessed Tax	232,269	219,289	220,754	204,445	205,454	198,448	197,544	193,679	876,757	795,125	732,570
Total revenues and reimbursable expenses	255,199	242,925	244,288	223,062	228,680	219,744	218,277	211,298	965,474	877,999	807,745
Reimbursable expenses	$ (22,930)	$ (23,636)	$ (23,534)	$ (18,617)	$ (23,226)	$ (21,296)	$ (20,733)	$ (17,619)	(88,717)	(82,874)	(75,175)
Gain (Loss) Related To Litigation Settlement And Other Operating Gains									1,196	2,019	(1,111)
Depreciation and amortization expense									28,365	34,575	38,213
Goodwill, Impairment Loss									0	0	253,093
Other expense, net									11,215	26,875	15,048
Income (loss) from continuing operations before taxes									52,491	25,221	(222,504)
Health Care [Member]
Components of Segment Information
Revenue from Contract with Customer, Including Assessed Tax									399,221	364,763
Business Advisory [Member]
Components of Segment Information
Revenue from Contract with Customer, Including Assessed Tax									252,508	236,185
Education [Member]
Components of Segment Information
Revenue from Contract with Customer, Including Assessed Tax									225,028	194,177
Operating Segments [Member]
Components of Segment Information
Operating income (loss)									231,160	206,928	205,679
Operating Segments [Member] \| Health Care [Member]
Components of Segment Information
Operating income (loss)									$ 125,724	$ 108,060	$ 118,761
Segment operating income as a percentage of segment revenues									31.50%	29.60%	33.30%
Revenue from Contract with Customer, Including Assessed Tax									$ 399,221	$ 364,763	$ 356,909
Operating Segments [Member] \| Business Advisory [Member]
Components of Segment Information
Operating income (loss)									$ 49,695	$ 50,625	$ 46,600
Segment operating income as a percentage of segment revenues									19.70%	21.40%	22.40%
Revenue from Contract with Customer, Including Assessed Tax									$ 252,508	$ 236,185	$ 207,753
Operating Segments [Member] \| Education [Member]
Components of Segment Information
Operating income (loss)									$ 55,741	$ 48,243	$ 40,318
Segment operating income as a percentage of segment revenues									24.80%	24.80%	24.00%
Revenue from Contract with Customer, Including Assessed Tax									$ 225,028	$ 194,177	$ 167,908
Segment Reconciling Items [Member]
Components of Segment Information
Other operating expenses and gains									140,285	122,276	120,718
Gain (Loss) Related To Litigation Settlement And Other Operating Gains									(1,196)	(2,019)	1,111
Depreciation and amortization expense									28,365	34,575	38,213
Goodwill, Impairment Loss									0	0	253,093
Other expense, net									$ (11,215)	$ (26,875)	$ (15,048)

Leases Leases (Tables)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Schedule of Supplemental Balance Sheet Information for Operating Leases [Table Text Block]



Balance Sheet	December 31, 2019
Operating lease right-of-use assets	$	54,954

Current maturities of operating lease liabilities	$	7,469
Operating lease liabilities, net of current portion	69,233
Total lease liabilities	$	76,702

Schedule of Supplemental Operating Lease Information [Table Text Block]



Other Information	Year Ended December 31, 2019
Cash paid for operating lease liabilities	$	13,902
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	$	12,842

Weighted average remaining lease term - operating leases	7.7 years
Weighted average discount rate - operating leases	4.3		%

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

The table below summarizes the remaining expected lease payments under our operating leases as of December 31, 2019.



Future Lease Payments	December 31, 2019
2020	$	9,772
2021	12,039
2022	11,502
2023	11,470
2024	10,893
Thereafter	35,211
Total operating lease payments	$	90,887
Less: imputed interest	(14,185		)
Present value of operating lease liabilities	$	76,702

The table below summarizes the future minimum rental commitments, as defined by ASC 840, under our non-cancelable operating leases as of December 31, 2018.



Lease Payments	December 31, 2018 ⁽¹⁾
2019	$	13,701
2020	12,724
2021	11,590
2022	10,766
2023	10,707
Thereafter	27,033
Total	$	86,521

(1)

As of December 31, 2018, the expected total future minimum sublease income to be received was $10.2 million.

Lease, Cost [Table Text Block]



Lease Cost	Year Ended December 31, 2019
Operating lease cost	$	11,883
Short-term leases ⁽¹⁾	322
Variable lease costs	3,656
Sublease income	(2,638		)
Net lease cost ^(2)(3)(4)	$	13,223


(1)	Includes variable lease costs related to short-term leases.


(2)	Net lease cost includes $0.4 million for the year ended December 31, 2019, recorded as restructuring charges as they relate to vacated office spaces. See Note 11 "Restructuring Charges" for additional information on our vacated office spaces.


(3)	Net lease cost includes $0.3 million for the year ended December 31, 2019, related to vacated office spaces directly related to discontinued operations.

(4)

Rent expense, including operating expenses, real estate taxes and insurance, recorded under ASC 840 for the years ended December 31, 2018 and 2017 was $15.1 million and $14.3 million, respectively.

Fair Value of Financial Instruments - Summary of Carrying Amount and Estimated Fair Value of Convertible Notes (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 208,853	$ 296,985
Convertible Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 0	242,617
Estimated fair value		$ 242,940

Segment Information - Additional Information (Detail)	12 Months Ended
Segment Information - Additional Information (Detail)	Dec. 31, 2019 Segment
Segment Reporting [Abstract]
Number of Operating Segments	3

Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning balance	$ 900	$ 813	$ 3,340
Decrease based on tax positions related to the prior year	(115)		(117)
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	(735)	(28)	(2,410)
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions		115
Unrecognized tax benefits, ending balance	$ 50	$ 900	$ 813
Document Period End Date	Dec. 31, 2019

Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Components of Accumulated Other Comprehensive Loss, Net of Tax

The table below sets forth the components of accumulated other comprehensive income (loss), net of tax for the years ended December 31, 2019, 2018, and 2017.



	Foreign Currency Translation			Available-for- Sale Investments			Cash Flow Hedges ⁽¹⁾			Total
Balance as of December 31, 2016	$	(453	)	$	4,088		$	(20	)	$	3,615
Foreign currency translation adjustment, net of tax of $0	1,602			—			—			1,602
Unrealized gain on investments:
Change in fair value, net of tax of $(998)	—			4,231			—			4,231
Reclassification adjustment into retained earnings ⁽²⁾	—			493			—			493
Unrealized gain (loss) on cash flow hedges:
Change in fair value, net of tax of $(106)	—			—			366			366
Reclassification adjustment into earnings, net of tax of $(46)	—			—			69			69
Reclassification adjustment into retained earnings ⁽²⁾	—			—			(6		)	(6		)
Balance as of December 31, 2017	1,149			8,812			409			10,370
Foreign currency translation adjustment, net of tax of $0	(1,814		)	—			—			(1,814		)
Unrealized gain on investments:
Change in fair value, net of tax of $(2,753)	—			7,772			—			7,772
Unrealized gain (loss) on cash flow hedges:
Change in fair value, net of tax of $(63)	—			—			197			197
Reclassification adjustment into earnings, net of tax of $(10)	—			—			(30		)	(30		)
Balance as of December 31, 2018	(665		)	16,584			576			16,495
Foreign currency translation adjustment, net of tax of $0	99			—			—			99
Unrealized gain (loss) on investments:
Change in fair value, net of tax of $185	—			(702		)	—			(702		)
Unrealized gain (loss) on cash flow hedges:
Change in fair value, net of tax of $295	—			—			(819		)	(819		)
Reclassification adjustment into earnings, net of tax of $48	—			—			(137		)	(137		)
Balance as of December 31, 2019	$	(566	)	$	15,882		$	(380	)	$	14,936


(1)	The before tax amounts reclassified from accumulated other comprehensive income (loss) related to our cash flow hedges are recorded to interest expense, net of interest income.

(2)

Upon adoption of ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, we reclassified $0.5 million of stranded tax effects, which resulted from the enactment of the 2017 Tax Reform, from accumulated other comprehensive income to retained earnings.

Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2019	Feb. 18, 2020	Jun. 30, 2019
Document And Entity Information [Abstract]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Entity Incorporation, State or Country Code	DE
Document Transition Report	false
Document Quarterly Report	true
Entity Registrant Name	HURON CONSULTING GROUP INC.
Trading Symbol	HURN
Entity Central Index Key	0001289848
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Entity File Number	000-50976
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		22,509,235
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,128,100,000
Entity Tax Identification Number	01-0666114
Security Exchange Name	NASDAQ
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Address, Address Line One	550 West Van Buren Street
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60607
City Area Code	(312)
Local Phone Number	583-8700
Entity Interactive Data Current	Yes
Entity Shell Company	false

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

The impact of the new lease standard on our consolidated balance sheet upon adoption follows:



	As of December 31, 2018		ASC 842 Adjustment			As of January 1, 2019
Assets
Operating lease right-of-use assets	$	—	$	56,463		$	56,463

Liabilities
Accrued expenses and other current liabilities	$	17,207	$	(2,557	)	$	14,650
Current maturities of operating lease liabilities	$	—	$	10,537		$	10,537
Deferred compensation and other liabilities	$	20,875	$	(536	)	$	20,339
Deferred lease incentives	$	13,693	$	(13,693	)	$	—
Operating lease liabilities, net of current portion	$	—	$	62,712		$	62,712

Other Comprehensive Income (Loss)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Other Comprehensive Income (Loss)

The table below sets forth the components of accumulated other comprehensive income (loss), net of tax for the years ended December 31, 2019, 2018, and 2017.



	Foreign Currency Translation			Available-for- Sale Investments			Cash Flow Hedges ⁽¹⁾			Total
Balance as of December 31, 2016	$	(453	)	$	4,088		$	(20	)	$	3,615
Foreign currency translation adjustment, net of tax of $0	1,602			—			—			1,602
Unrealized gain on investments:
Change in fair value, net of tax of $(998)	—			4,231			—			4,231
Reclassification adjustment into retained earnings ⁽²⁾	—			493			—			493
Unrealized gain (loss) on cash flow hedges:
Change in fair value, net of tax of $(106)	—			—			366			366
Reclassification adjustment into earnings, net of tax of $(46)	—			—			69			69
Reclassification adjustment into retained earnings ⁽²⁾	—			—			(6		)	(6		)
Balance as of December 31, 2017	1,149			8,812			409			10,370
Foreign currency translation adjustment, net of tax of $0	(1,814		)	—			—			(1,814		)
Unrealized gain on investments:
Change in fair value, net of tax of $(2,753)	—			7,772			—			7,772
Unrealized gain (loss) on cash flow hedges:
Change in fair value, net of tax of $(63)	—			—			197			197
Reclassification adjustment into earnings, net of tax of $(10)	—			—			(30		)	(30		)
Balance as of December 31, 2018	(665		)	16,584			576			16,495
Foreign currency translation adjustment, net of tax of $0	99			—			—			99
Unrealized gain (loss) on investments:
Change in fair value, net of tax of $185	—			(702		)	—			(702		)
Unrealized gain (loss) on cash flow hedges:
Change in fair value, net of tax of $295	—			—			(819		)	(819		)
Reclassification adjustment into earnings, net of tax of $48	—			—			(137		)	(137		)
Balance as of December 31, 2019	$	(566	)	$	15,882		$	(380	)	$	14,936


(1)	The before tax amounts reclassified from accumulated other comprehensive income (loss) related to our cash flow hedges are recorded to interest expense, net of interest income.

(2)

Restructuring Charges - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Restructuring Charges [Line Items]
Restructuring additions			$ 1,855	$ 3,657	$ 6,246
Gain (Loss) on Termination of Lease	$ 800
Loss on disposal		$ 5,800	0	(5,807)	931
Restructuring charge liability	159		159	2,911	5,514	$ 1,792
Operating Lease, Impairment Loss			800
Restructuring and Related Cost, Accelerated Depreciation			200
Employee Severance [Member]
Restructuring Charges [Line Items]
Restructuring additions			600	2,100	3,700
Restructuring charge liability	68		68	443	1,267	443
Office Space Reductions [Member]
Restructuring Charges [Line Items]
Restructuring additions			1,200	1,300	2,400
Restructuring charge liability	91		91	2,468	4,247	1,349
Office Space Reductions [Member] \| Wisconsin Office [Member]
Restructuring Charges [Line Items]
Restructuring additions				800
Office Space Reductions [Member] \| San Francisco Office [Member]
Restructuring Charges [Line Items]
Restructuring additions				400
Office Space Reductions [Member] \| Chicago, Illinois [Member]
Restructuring Charges [Line Items]
Restructuring additions				100
Office Space Reductions [Member] \| LakeOswegoOregon [Member]
Restructuring Charges [Line Items]
Operating Lease, Impairment Loss			700
Office Space Reductions [Member] \| Middleton, Wisconsin [Member]
Restructuring Charges [Line Items]
Restructuring additions			400
Office Space Reductions [Member] \| Houston, Texas [Member]
Restructuring Charges [Line Items]
Restructuring additions			100
Other Restructuring [Member]
Restructuring Charges [Line Items]
Restructuring additions				300
Restructuring charge liability	0		0	0	0	$ 0
Health Care [Member]
Restructuring Charges [Line Items]
Restructuring additions			300	1,100	2,100
Corporate, Non-Segment [Member]
Restructuring Charges [Line Items]
Restructuring additions			1,500	1,600	2,900
Business Advisory [Member]
Restructuring Charges [Line Items]
Restructuring additions			100	1,000	$ 1,100
Huron Legal [Member] \| Discontinued operations [Member]
Restructuring Charges [Line Items]
Restructuring additions			$ 100	$ 400
Restructuring Charges [Member]
Restructuring Charges [Line Items]
Gain (Loss) on Termination of Lease	$ 400

Commitments, Contingencies and Guarantees - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Commitments And Contingencies [Line Items]
Gain (Loss) Related to Litigation Settlement	$ 400	$ 2,500
Fair Value, Recurring [Member]
Commitments And Contingencies [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	546	11,441
Fair Value, Recurring [Member] \| Contingent Consideration Liability [Member]
Commitments And Contingencies [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	11,441	$ 22,828
Senior Secured Credit Facility [Member]
Commitments And Contingencies [Line Items]
Guarantees in the form of letters of credit	1,700	1,600
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Recurring [Member]
Commitments And Contingencies [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	$ 0	11,441
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Recurring [Member] \| Contingent Consideration Liability [Member]
Commitments And Contingencies [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure		$ 11,441

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	25,144,764	25,114,739
Treasury stock, shares	2,425,430	2,568,288

Description of Business	12 Months Ended
Description of Business	Dec. 31, 2019
Accounting Policies [Abstract]
Description of Business	Description of Business Huron is a global consultancy that collaborates with clients to drive strategic growth, ignite innovation and navigate constant change. Through a combination of strategy, expertise and creativity, we help clients accelerate operational, digital and cultural transformation, enabling the change they need to own their future. By embracing diverse perspectives, encouraging new ideas and challenging the status quo, we create sustainable results for the organizations we serve.

Restructuring Charges - (Tables)

12 Months Ended

Dec. 31, 2019

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost

The table below sets forth the changes in the carrying amount of our restructuring charge liability by restructuring type for the years ended December 31, 2019 and 2018.



	Employee Costs			Office Space Reductions			Other			Total
Balance as of December 31, 2017	$	1,267		$	4,247		$	—		$	5,514
Additions ^{(1) (2)}	2,102			677			191			2,970
Payments	(2,879		)	(3,284		)	(191		)	(6,354		)
Adjustments ^{(1) (2)}	(47		)	828			—			781
Balance as of December 31, 2018	443			2,468			—			2,911
Adoption of ASC 842 ⁽³⁾	—			(1,119		)	—			(1,119		)
Balance as of January 1, 2019	443			1,349			—			1,792
Additions ⁽²⁾	636			9			—			645
Payments	(995		)	(383		)	—			(1,378		)
Adjustments ⁽²⁾	(16		)	(884		)	—			(900		)
Balance as of December 31, 2019	$	68		$	91		$	—		$	159

(1)

Additions and adjustments for the years ended December 31, 2019 and 2018 include restructuring charges of $0.1 million and $0.4 million, respectively related to office exit costs for vacated offices spaces directly related to discontinued operations

Segment Information

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Segment Information

Segments are defined as components of a company that engage in business activities from which they may earn revenues and incur expenses, and for which separate financial information is available and is evaluated regularly by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. Our chief operating decision maker, who is our chief executive officer, manages the business under three operating segments, which are our reportable segments: Healthcare, Business Advisory, and Education.


•	Healthcare

Our Healthcare segment has a depth of expertise in financial and operational improvement, care transformation, culture and organizational excellence, strategy, and technology and analytics. We serve national and regional hospitals, integrated health systems, academic medical centers, community hospitals, and medical groups. Our solutions help clients evolve and adapt to the rapidly changing healthcare environment and achieve growth, optimize performance, enhance profitability, improve quality and clinical outcomes, align leaders, improve organizational culture, and drive physician, patient, and employee engagement across the enterprise to deliver better consumer outcomes.

We help organizations transform and innovate their delivery model to focus on patient wellness by improving quality outcomes, minimizing care variation and fundamentally improving patient and population health. Our consultants collaborate with clients to help build and sustain today’s business to invest in the future by reducing complexity, improving operational efficiency and growing market share. We enable the healthcare of the future by identifying, integrating and optimizing digital and technology investments to collect data that transforms care delivery and improves patient outcomes. We also develop future leaders capable of driving meaningful cultural and organizational change and who transform the consumer experience.


•	Business Advisory

Our Business Advisory segment provides services to large and middle market organizations, lending institutions, law firms, investment banks, private equity firms, and not-for-profit organizations, including higher education and healthcare institutions. We assist clients in a broad range of industries and across the spectrum from healthy, well-capitalized companies to organizations in transition, as well as creditors, equity owners, and other key constituents. Our Enterprise Solutions and Analytics experts advise, deliver, and optimize technology and analytic solutions that enable organizations to manage and optimize their financial performance, operational efficiency, and client or stakeholder experience. Our Business Advisory experts resolve complex business issues and enhance client enterprise value through a suite of services including capital advisory, transaction advisory, operational improvement, restructuring and turnaround, valuation, and dispute advisory. Our Strategy and Innovation professionals collaborate with clients across a range of industries to identify new growth opportunities, build new ventures and capabilities, and accelerate organizational change. Our Life Sciences professionals provide strategic solutions to help pharmaceutical, medical device, and biotechnology companies deliver more value to patients, payers, and providers, and comply with regulations.


•	Education

Our Education segment provides consulting and technology solutions to higher education institutions and academic medical centers. We collaborate with clients to address challenges relating to business and technology strategy, financial and operational excellence, student success, research administration, and regulatory compliance. Our research enterprise solutions assist clients in identifying and implementing institutional research strategy, optimizing clinical research operations, improving financial management and cost reimbursement, improving service to faculty, and mitigating risk compliance. Our technology strategy, enterprise applications, and analytic solutions transform and optimize operations, deliver time and cost savings, and enhance the student experience. Our institutional strategy, budgeting and financial management, and business operations align missions with business priorities, improve quality, and reduce costs institution-wide. Our student solutions improve attraction, retention and graduation rates, increase student satisfaction and help generate quality outcomes.

Segment operating income consists of the revenues generated by a segment, less the direct costs of revenue and selling, general and administrative expenses that are incurred directly by the segment. Unallocated corporate costs include costs related to administrative functions that are performed in a centralized manner that are not attributable to a particular segment. These administrative function costs include costs for corporate office support, office facility costs, costs relating to accounting and finance, human resources, legal, marketing, information technology, and company-wide business development functions, as well as costs related to overall corporate management.



	Year Ended December 31,
	2019			2018			2017
Healthcare:
Revenues	$	399,221		$	364,763		$	356,909
Operating income	$	125,724		$	108,060		$	118,761
Segment operating income as a percentage of segment revenues	31.5		%	29.6		%	33.3		%
Business Advisory:
Revenues	$	252,508		$	236,185		$	207,753
Operating income	$	49,695		$	50,625		$	46,600
Segment operating income as a percentage of segment revenues	19.7		%	21.4		%	22.4		%
Education:
Revenues	$	225,028		$	194,177		$	167,908
Operating income	$	55,741		$	48,243		$	40,318
Segment operating income as a percentage of segment revenues	24.8		%	24.8		%	24.0		%
Total Company:
Revenues	$	876,757		$	795,125		$	732,570
Reimbursable expenses	88,717			82,874			75,175
Total revenues and reimbursable expenses	$	965,474		$	877,999		$	807,745

Segment operating income	$	231,160		$	206,928		$	205,679
Items not allocated at the segment level:
Other operating expenses	140,285			122,276			120,718
Litigation and other losses (gains), net	(1,196		)	(2,019		)	1,111
Depreciation and amortization	28,365			34,575			38,213
Goodwill impairment charges ⁽¹⁾	—			—			253,093
Other expense, net	11,215			26,875			15,048
Income (loss) from continuing operations before taxes	$	52,491		$	25,221		$	(222,504	)


(1)	The goodwill impairment charges are not allocated at the segment level because the underlying goodwill asset is reflective of our corporate investment in the segments. We do not include the impact of goodwill impairment charges in our evaluation of segment performance.



	As of December 31,
Segment Assets:	2019		2018		2017
Healthcare	$	73,019	$	65,133	$	70,097
Business Advisory	59,315		59,017		58,217
Education	38,881		26,990		31,367
Unallocated assets ⁽¹⁾	933,056		898,392		877,247
Total assets	$	1,104,271	$	1,049,532	$	1,036,928


(1)	Unallocated assets include goodwill and intangible assets and our long-term investments, as management does not evaluate these items at the segment level when assessing segment performance or allocating resources. Refer to Note 4 “Goodwill and Intangible Assets" and Note 13 "Fair Value of Financial Instruments" for further information on these assets.



	Year Ended December 31, 2019
	Healthcare		Business Advisory		Education		Total
Billing Arrangements
Fixed-fee	$	249,479	$	100,635	$	51,826	$	401,940
Time and expense	55,204		139,610		154,893		349,707
Performance-based	71,051		6,856		—		77,907
Software support, maintenance and subscriptions	23,487		5,407		18,309		47,203
Total	$	399,221	$	252,508	$	225,028	$	876,757

Employee Type ⁽¹⁾
Revenue generated by full-time billable consultants	$	280,915	$	243,350	$	195,844	$	720,109
Revenue generated by full-time equivalents	118,306		9,158		29,184		156,648
Total	$	399,221	$	252,508	$	225,028	$	876,757

Timing of Revenue Recognition
Revenue recognized over time	$	390,884	$	252,508	$	223,673	$	867,065
Revenue recognized at a point in time	8,337		—		1,355		9,692
Total	$	399,221	$	252,508	$	225,028	$	876,757



	Year Ended December 31, 2018
	Healthcare		Business Advisory		Education		Total
Billing Arrangements
Fixed-fee	$	239,263	$	98,119	$	39,586	$	376,968
Time and expense	58,377		128,583		140,824		327,784
Performance-based	42,684		5,405		—		48,089
Software support, maintenance and subscriptions	24,439		4,078		13,767		42,284
Total	$	364,763	$	236,185	$	194,177	$	795,125

Employee Type ⁽¹⁾
Revenue generated by full-time billable consultants	$	247,416	$	225,335	$	170,496	$	643,247
Revenue generated by full-time equivalents	117,347		10,850		23,681		151,878
Total	$	364,763	$	236,185	$	194,177	$	795,125

Timing of Revenue Recognition
Revenue recognized over time	$	356,826	$	236,185	$	190,526	$	783,537
Revenue recognized at a point in time	7,937		—		3,651		11,588
Total	$	364,763	$	236,185	$	194,177	$	795,125

(1)

For the years ended December 31, 2019, 2018, and 2017, substantially all of our revenues and long-lived assets were attributed to or located in the United States.

At December 31, 2019 and 2018, no single client accounted for greater than 10% of our combined receivables and unbilled services balances. During the years ended December 31, 2019, 2018, and 2017, no single client generated greater than 10% of our consolidated revenues.

Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The table below sets forth the changes in the carrying amount of goodwill by reportable segment for the years ended December 31, 2019 and 2018.



	Healthcare			Business Advisory			Education		Total
Balance as of December 31, 2017:
Goodwill	$	636,810		$	302,187		$	102,829	$	1,041,826
Accumulated impairment losses	(208,081		)	(187,995		)	—		(396,076		)
Goodwill, net as of December 31, 2017	$	428,729		$	114,192		$	102,829	$	645,750
Goodwill recorded in connection with a business combination	—			186			—		186
Foreign currency translation	—			(673		)	—		(673		)
Balance as of December 31, 2018:
Goodwill	636,810			301,700			102,829		1,041,339
Accumulated impairment losses	(208,081		)	(187,995		)	—		(396,076		)
Goodwill, net as of December 31, 2018	$	428,729		$	113,705		$	102,829	$	645,263
Goodwill recorded in connection with a business combination ⁽¹⁾	—			—			1,060		1,060
Foreign currency translation	—			357			—		357
Balance as of December 31, 2019:
Goodwill	636,810			302,057			103,889		1,042,756
Accumulated impairment losses	(208,081		)	(187,995		)	—		(396,076		)
Goodwill, net as of December 31, 2019:	$	428,729		$	114,062		$	103,889	$	646,680


(1)	On September 30, 2019, we completed the acquisition of a business in our Education segment. The results of operations of the acquired business is included in our consolidated financial statements and results of operations of our Education segment from the date of acquisition. This acquisition is not significant to our consolidated financial statements.

Intangible Assets

Intangible assets as of December 31, 2019 and 2018 consisted of the following:



		As of December 31,
		2019				2018
	Useful Life in Years	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer relationships	3 to 13	$	87,577	$	61,882	$	98,235	$	60,462
Trade names	5 to 6	28,930		25,894		28,930		23,181
Technology and software	3 to 5	5,694		4,321		5,694		2,842
Non-competition agreements	5	2,220		1,447		3,650		2,241
Customer contracts	2	800		52		—		—
Favorable lease contract	3	—		—		720		646
Total		$	125,221	$	93,596	$	137,229	$	89,372

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The table below sets forth the estimated annual amortization expense for each of the five succeeding years for the intangible assets recorded as of December 31, 2019.



Year Ending December 31,	Estimated Amortization Expense
2020	$	12,638
2021	$	8,379
2022	$	6,111
2023	$	3,512
2024	$	741

Restructuring Charges

12 Months Ended

Dec. 31, 2019

Restructuring and Related Activities [Abstract]

Restructuring Charges

2019

In 2019, we incurred $1.9 million of pretax restructuring expense. This expense primarily consisted of the following charges:

Severance - We incurred $0.6 million of severance expense as a result of workforce reductions to better align resources with market demand and workforce reductions in our corporate operations.

Office exit costs - We incurred $1.2 million of office exit costs. During 2019, we exited a portion of our Lake Oswego, Oregon office resulting in a $0.7 million lease impairment charge on the related operating lease right-of-use asset and leasehold improvements and $0.2 million of accelerated depreciation on furniture and fixtures in that office. The lease impairment charge was recognized in accordance with ASC 842, Leases, which we adopted on a modified retrospective basis on January 1, 2019. See Note 2 "Summary of Significant Accounting Policies" for additional information on our adoption of ASC 842. See Note 5 "Leases" for additional information on the long-lived asset impairment test. Additionally, during 2019, we exited the remaining portion of our Middleton, Wisconsin office and an office in Houston, Texas, resulting in restructuring charges of $0.4 million and $0.1 million, respectively, which primarily consisted of accelerated depreciation on furniture and fixtures in those offices. During the fourth quarter of 2019, we entered into an amendment to the lease of our principal executive offices in Chicago, Illinois. Among other items, the amendment terminated the lease with respect to certain leased space which we previously vacated and currently sublease to a third-party. As a result of the amendment, we recognized a restructuring gain of $0.4 million. See Note 5 "Leases" for additional information on the amendment.

Of the $1.9 million pretax restructuring charge, $1.5 million related to our corporate operations, $0.3 million related to our Healthcare segment, and $0.1 million related to our Business Advisory segment.

2018

In 2018, we incurred $3.7 million of pretax restructuring expense. This expense primarily consisted of the following charges:

Severance - We incurred $2.1 million of severance expense as a result of workforce reductions to better align resources with market demand.

Office exit costs - We incurred $1.3 million of office exit costs. Of the $1.3 million, $0.8 million related to the accrual of remaining lease payments, net of estimated sublease income, accelerated depreciation on leasehold improvements, and moving expenses due to exiting a portion of our Middleton, Wisconsin office; $0.4 million related to updated lease assumptions, commission costs, and moving expenses for our San Francisco office vacated in 2017; and $0.1 million related to updated lease assumptions for our Chicago office consolidation. The office exit costs incurred in the 2018 were accounted for in accordance with ASC 840, Leases.

Other - We incurred $0.3 million related to the divestiture of our Middle East practice within the Business Advisory segment in the second quarter of 2018. During the second quarter of 2018, we sold our Middle East practice to a former employee who was the practice leader of that business at the time, and we recorded a $5.8 million loss which is included in other income (expense), net in our consolidated statements of operations.

Of the $3.7 million pretax restructuring charge, $1.1 million was related to our Healthcare segment, $1.0 million was related to our Business Advisory segment, and $1.6 million was related to our corporate operations.

2017

In 2017, we incurred $6.2 million of pretax restructuring expense. This expense primarily consisted of the following charges:

Severance - We incurred $3.7 million of severance expense as a result of workforce reductions to better align resources with market demand and workforce reductions in our corporate operations.

Office exit costs - We incurred $2.4 million of office exit costs primarily related to the accrual of remaining lease obligations, net of estimated sublease income, due to relocating our San Francisco office to a smaller space and consolidating our Chicago and New York offices, and accelerated depreciation on leasehold improvements for our San Francisco office. The office exit costs incurred in the 2017 were accounted for in accordance with ASC 840, Leases.

Of the $6.2 million pretax restructuring charge, $2.1 million was related to our Healthcare segment, $1.1 million was related to our Business Advisory segment, and $2.9 million was related to our corporate operations.

The table below sets forth the changes in the carrying amount of our restructuring charge liability by restructuring type for the years ended December 31, 2019 and 2018.



	Employee Costs			Office Space Reductions			Other			Total
Balance as of December 31, 2017	$	1,267		$	4,247		$	—		$	5,514
Additions ^{(1) (2)}	2,102			677			191			2,970
Payments	(2,879		)	(3,284		)	(191		)	(6,354		)
Adjustments ^{(1) (2)}	(47		)	828			—			781
Balance as of December 31, 2018	443			2,468			—			2,911
Adoption of ASC 842 ⁽³⁾	—			(1,119		)	—			(1,119		)
Balance as of January 1, 2019	443			1,349			—			1,792
Additions ⁽²⁾	636			9			—			645
Payments	(995		)	(383		)	—			(1,378		)
Adjustments ⁽²⁾	(16		)	(884		)	—			(900		)
Balance as of December 31, 2019	$	68		$	91		$	—		$	159


(1)	Additions and adjustments for the years ended December 31, 2019 and 2018 include restructuring charges of $0.1 million and $0.4 million, respectively related to office exit costs for vacated offices spaces directly related to discontinued operations.


(2)	Additions and adjustments exclude non-cash items related to vacated office spaces, such as lease impairment charges and accelerated depreciation on fixed assets, which are recorded as restructuring charges on our consolidated statements of operations.

(3)

Upon adoption of ASC 842 on January 1, 2019, we reclassified the restructuring charge liabilities, which represented the present value of remaining lease payments, net of estimated sublease income, for vacated office spaces from restructuring charge liabilities to operating lease right-of-use assets. See Note 2 "Summary of Significant Accounting Polices" for additional information on the impact of adoption.

The $0.1 million restructuring charge liability related to office space reductions at December 31, 2019 is included as a component of deferred compensation and other liabilities. The $0.1 million restructuring charge liability related to employee costs at December 31, 2019 is expected to be paid in the next 12 months and is included as a component of accrued payroll and related benefits.

Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

The table below sets forth the changes in the carrying amount of our allowances for doubtful accounts and unbilled services and valuation allowance for deferred tax assets for the years ended December 31, 2019, 2018, and 2017.



	Beginning balance		Additions ⁽¹⁾	Deductions	Ending balance
Year ended December 31, 2017:
Allowances for doubtful accounts and unbilled services	$	21,259	43,888	40,648	$	24,499
Valuation allowance for deferred tax assets	$	626	793	172	$	1,247
Year ended December 31, 2018:
Allowances for doubtful accounts and unbilled services	$	24,499	49,390	51,648	$	22,241
Valuation allowance for deferred tax assets	$	1,247	2,314	418	$	3,143
Year ended December 31, 2019:
Allowances for doubtful accounts and unbilled services	$	22,241	69,979	73,552	$	18,668
Valuation allowance for deferred tax assets	$	3,143	1	2,128	$	1,016

(1)

Additions to allowances for doubtful accounts and unbilled services are charged to revenues to the extent the provision relates to fee adjustments and other discretionary pricing adjustments. To the extent the provision relates to a client’s inability to make required payments on accounts receivables, the provision is charged to operating expenses. Additions also include allowances acquired in business acquisitions, which were not material in any period presented.

Earnings Per Share

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Earnings Per Share

Basic earnings per share excludes dilution and is computed by dividing net income by the weighted average number of common shares outstanding for the period, excluding unvested restricted common stock. Diluted earnings per share reflects the potential reduction in earnings per share that could occur if securities or other contracts to issue common stock were exercised or converted into common stock under the treasury stock method. Such securities or other contracts include unvested restricted stock awards, outstanding common stock options, convertible senior notes, and outstanding warrants, to the extent dilutive. In periods for which we report a net loss from continuing operations, diluted weighted average common shares outstanding excludes all potential common stock equivalents as their impact on diluted net loss from continuing operations per share would be anti-dilutive.

Earnings (loss) per share under the basic and diluted computations are as follows:



	Year Ended December 31,
	2019			2018			2017
Net income (loss) from continuing operations	$	41,979		$	13,944		$	(170,505	)
Income (loss) from discontinued operations, net of tax	(236		)	(298		)	388
Net income (loss)	$	41,743		$	13,646		$	(170,117	)

Weighted average common shares outstanding—basic	21,993			21,706			21,439
Weighted average common stock equivalents	514			352			—
Weighted average common shares outstanding—diluted	22,507			22,058			21,439

Net earnings (loss) per basic share:
Net income (loss) from continuing operations	$	1.91		$	0.64		$	(7.95	)
Income (loss) from discontinued operations, net of tax	(0.01		)	(0.01		)	0.02
Net income (loss)	$	1.90		$	0.63		$	(7.93	)

Net earnings (loss) per diluted share:
Net income (loss) from continuing operations	$	1.87		$	0.63		$	(7.95	)
Income (loss) from discontinued operations, net of tax	(0.02		)	(0.01		)	0.02
Net income (loss)	$	1.85		$	0.62		$	(7.93	)

The number of anti-dilutive securities excluded from the computation of the weighted average common stock equivalents presented above were as follows:



	As of December 31,
	2019	2018	2017
Unvested restricted stock awards	—	—	636
Outstanding common stock options	—	—	194
Convertible senior notes	—	3,129	3,129
Warrants related to the issuance of convertible senior notes	3,129	3,129	3,129
Total anti-dilutive securities	3,129	6,258	7,088

See Note 7 “Financing Arrangements” for further information on the convertible senior notes and warrants related to the issuance of convertible notes.

We currently have a share repurchase program permitting us to repurchase up to $125 million of our common stock through October 31, 2020 (the "Share Repurchase Program"). The amount and timing of the repurchases will be determined by management and will depend on a variety of factors, including the trading price of our common stock, capacity under our credit facility, general market and business conditions, and applicable legal requirements. In 2019, we repurchased and retired 210,437 shares for $14.2 million, of which $1.2 million settled in the first quarter of 2020. All of the 210,437 shares repurchased and retired in 2019 were included as a reduction to our basic weighted average shares outstanding for the year ended December 31, 2019 based on the trade date of the share repurchase. No shares were repurchased under this program in 2018 or 2017. As of December 31, 2019, $20.9 million remains available for share repurchases.

Equity Incentive Plans

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Equity Incentive Plans

In 2012, Huron adopted the 2012 Omnibus Incentive Plan (the “2012 Plan”)which replaced, on a prospective basis, our 2004 Omnibus Stock Plan (the "2004 Plan") such that future grants will be granted under the 2012 Plan and any outstanding awards granted under the 2004 Plan that are cancelled, expired, forfeited, settled in cash, or otherwise terminated without a delivery of shares to the participant will not become available for grant under the 2012 Plan. The 2012 Plan permits the grant of stock options, stock appreciation rights, restricted stock, performance shares and other share-based or cash-based awards valued in whole or in part by reference to, or otherwise based on, our common stock. Subsequent to the initial approval of the 2012 Plan and through December 31, 2019, our shareholders approved amendments to the 2012 Plan to increase the number of shares reserved for issuance by 2,254,000, in the aggregate. As of December 31, 2019, approximately 1.1 million shares remain available for issuance under the 2012 Plan.

On May 1, 2015, we adopted the Stock Ownership Participation Program (the “SOPP”), which is available to Huron employees below the managing director level who do not receive equity-based awards as part of their normal compensation plan. Under the SOPP, eligible employees may elect to use after-tax payroll deductions, or cash contributions, to purchase shares of the Company’s common stock on certain designated purchase dates. Employees who purchase stock under the SOPP are granted restricted stock equal to 25% of their purchased shares. Vesting of the restricted stock is subject to both a time-based vesting schedule and a requirement that the purchased shares be held for a specified period. The initial number of shares available for issuance under the SOPP was 300,000. Prior to the adoption of the SOPP, the matching share grants and the employee purchased shares under the stock ownership participation program were governed by the 2012 Plan. As of December 31, 2019, less than 0.1 million shares remain available for issuance under the SOPP.

It has been our practice to issue shares of common stock upon exercise of stock options and granting of restricted stock from authorized but unissued shares, with the exception of the SOPP under which shares are issued from treasury stock. Certain grants of restricted stock under the 2012 Plan may be issued from treasury stock at the direction of the Compensation Committee.

Share-based awards outstanding under our 2012 Plan and our 2004 Plan provide for a retirement eligibility provision, under which eligible employees who have reached 62 years of age and have completed seven years of employment with Huron will continue vesting in their share-based awards after retirement, subject to certain conditions. This retirement eligibility provision also applies to future awards granted to eligible employees under the 2012 Plan. The Compensation Committee of the board of directors has the responsibility of interpreting the 2012 Plan and SOPP and determining all of the terms and conditions of awards made under the plans, including when the awards will become exercisable or otherwise vest.

Total share-based compensation cost recognized for the years ended December 31, 2019, 2018, and 2017 was $24.2 million, $18.8 million, and $14.8 million, respectively, with related income tax benefits of $5.3 million, $4.6 million, and $5.8 million, respectively. As of December 31, 2019, there was $26.2 million of total unrecognized compensation cost related to nonvested share-based awards. This cost is expected to be recognized over a weighted average period of 2.2 years.

Restricted Stock Awards

The grant date fair values of our restricted stock awards are measured based on the fair value of our common stock at grant date and amortized into expense over the service period. Subject to acceleration under certain conditions, the majority of our restricted stock vests annually over four years.

The table below summarizes the restricted stock activity for the year ended December 31, 2019.



	Number of Shares						Weighted Average Grant Date Fair Value (in dollars)
	2012 Omnibus Incentive Plan		Stock Ownership Participation Program		Total		Weighted Average Grant Date Fair Value (in dollars)
Nonvested restricted stock at December 31, 2018	747		11		758		$	43.08
Granted	341		12		353		$	48.57
Vested	(284	)	(10	)	(294	)	$	46.25
Forfeited	(30	)	(1	)	(31	)	$	45.24
Nonvested restricted stock at December 31, 2019	774		12		786		$	44.27

The aggregate fair value of restricted stock that vested during the years ended December 31, 2019, 2018, and 2017 was $14.5 million, $9.1 million, and $11.1 million, respectively. The weighted average grant date fair value per share of restricted stock granted during 2018 and 2017 was $38.45 and $42.11, respectively.

Performance-based Share Awards

During 2019, 2018, and 2017, the Company granted performance-based stock awards to our named executive officers and certain managing directors. The total number of shares earned by recipients of these awards is contingent upon meeting practice specific and Company-wide performance goals. Following the performance period, certain awards are subject to the completion of a service period, which is generally an additional two years. These earned awards vest on a graded vesting schedule over the service period. For certain performance awards, the recipients may earn additional shares of stock for performance achieved above the stated target. The grant date fair values of our performance-based share awards are measured based on the fair value of our common stock at grant date. Compensation cost is amortized into expense over the service period, including the performance period.

The table below summarizes the performance-based stock activity for the year ended December 31, 2019. All nonvested performance-based stock outstanding at December 31, 2019 and 2018 was granted under the 2012 Omnibus Incentive Plan.



	Number of Shares		Weighted Average Grant Date Fair Value (in dollars)
Nonvested performance-based stock at December 31, 2018	436		$	36.81
Granted ⁽¹⁾	281		$	47.93
Vested	(73	)	$	40.69
Forfeited ⁽²⁾	(144	)	$	36.06
Nonvested performance-based stock at December 31, 2019 ⁽³⁾	500		$	42.72


(1)	Shares granted in 2019 are presented at the stated target, which represents the base number of shares that could be earned. Actual shares earned may be below or, for certain grants, above the target based on the achievement of specific financial goals.


(2)	Forfeited shares include shares forfeited as a result of not meeting the performance criteria of the award as well as shares forfeited upon termination.

(3)

Of the 500,000 nonvested performance-based shares outstanding as of December 31, 2019, 403,794 shares were unearned and subject to achievement of specific financial goals. Once earned, the awards will be subject to time-based vesting according to the terms of the award. Based on 2019 financial results, approximately 110,936 of the 403,794 unearned shares will be forfeited in the first quarter of 2020.

The aggregate fair value of performance-based stock that vested during the years ended December 31, 2019, 2018, and 2017 was $3.4 million, $1.5 million, and $3.6 million, respectively. The weighted average grant date fair value per share of performance-based stock granted during 2018 and 2017 was $35.25 and $42.75, respectively.

Stock Options

Prior to 2014, the Company granted stock option awards to certain named executive officers. No stock option awards were granted in 2019, 2018, or 2017. The exercise prices of stock options are equal to the fair value of a share of common stock on the date of grant. Subject to acceleration under certain conditions, our stock options vest annually over four years. All stock options have a 10-year contractual term.

Stock option activity for the year ended December 31, 2019 was as follows:



	Number of Options (in thousands)		Weighted Average Exercise Price (in dollars)		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in millions)
Outstanding at December 31, 2018	154		$	30.52	2.5	$	3.2
Granted	—
Exercised	(48	)	$	25.97		$	1.6
Forfeited or expired	—
Outstanding at December 31, 2019 ⁽¹⁾	106		$	32.57	1.9	$	3.8
Exercisable at December 31, 2019	106		$	32.57	1.9	$	3.8


(1)	Of the 106,000 outstanding options, approximately 74,000 were granted under the 2004 Omnibus Stock Plan, and the remaining 32,000 options were granted under the 2012 Omnibus Incentive Plan.

The aggregate intrinsic value of options exercised during 2018 was $0.8 million. No options were exercised in 2017.

Consolidated Statements of Earnings and Other Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues and reimbursable expenses:
Revenue from Contract with Customer, Including Assessed Tax	$ 876,757	$ 795,125	$ 732,570
Reimbursable Revenues	88,717	82,874	75,175
Total revenues and reimbursable expenses	965,474	877,999	807,745
Direct costs and reimbursable expenses (exclusive of depreciation and amortization shown in operating expenses):
Direct costs	575,602	521,537	454,806
Amortization of intangible assets and software development costs	5,375	4,247	10,932
Reimbursable expenses	88,696	82,923	75,436
Total direct costs and reimbursable expenses	669,673	608,707	541,174
Operating expenses and other operating gains:
Selling, general and administrative expenses	203,071	180,983	175,364
Restructuring charges (1)	1,855	3,657	6,246
Litigation and other losses (gains), net	(1,196)	(2,019)	1,111
Depreciation and amortization	28,365	34,575	38,213
Goodwill, Impairment Loss	0	0	253,093
Total operating expenses and other losses (gains), net	232,095	217,196	474,027
Operating income (loss)	63,706	52,096	(207,456)
Other income (expense), net
Interest Expense Net Of Interest Income	(15,648)	(19,013)	(18,613)
Other Nonoperating Income (Expense)	4,433	(7,862)	3,565
Nonoperating Income (Expense)	(11,215)	(26,875)	(15,048)
Income (loss) from continuing operations before taxes	52,491	25,221	(222,504)
Income tax expense (benefit)	10,512	11,277	(51,999)
Net income (loss) from continuing operations	41,979	13,944	(170,505)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(236)	(298)	388
Net income (loss)	$ 41,743	$ 13,646	$ (170,117)
Net earnings per basic share:
Net income from continuing operations, per basic share (in USD per share)	$ 1.91	$ 0.64	$ (7.95)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	(0.01)	(0.01)	0.02
Net income, per basic share (in USD per share)	1.90	0.63	(7.93)
Net earnings per diluted share:
Net income from continuing operations, per diluted share (in USD per share)	1.87	0.63	(7.95)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	(0.02)	(0.01)	0.02
Net income, per diluted share (in USD per share)	$ 1.85	$ 0.62	$ (7.93)
Weighted average shares used in calculating earnings per share:
Basic (shares)	21,993	21,706	21,439
Diluted (shares)	22,507	22,058	21,439
Comprehensive income (loss):
Net income (loss)	$ 41,743	$ 13,646	$ (170,117)
Foreign currency translation adjustments, net of tax	99	(1,814)	1,602
Unrealized gain (loss) on investment, net of tax	(702)	7,772	4,724
Unrealized gain (loss) on cash flow hedging instruments, net of tax	(956)	167	429
Other comprehensive income	(1,559)	6,125	6,755
Comprehensive income (loss)	$ 40,184	$ 19,771	$ (163,362)

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 30, 2019
Goodwill [Line Items]
Goodwill, Impairment Loss	$ 0	$ 0	$ (253,093)
Amortization of Intangible Assets	$ 17,800	$ 24,000	35,000
Health Care [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss			(208,100)
Enterprise Solutions and Analytics [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss			$ (45,000)
Strategy and Innovation [Member]
Goodwill [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount				41.00%

Earnings Per Share - Summary of Anti-dilutive Securities Excluded from Computation of Weighted Average Common Stock Equivalents (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	3,129	6,258	7,088
Restricted Stock Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	0	0	636
Share-based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	0	0	194
Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	0	3,129	3,129
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	3,129	3,129	3,129

Financing Arrangements - Additional Information (Detail) $ / shares in Units, shares in Millions					1 Months Ended	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 22, 2017	Mar. 31, 2015 USD ($)	Sep. 30, 2014 USD ($) $ / shares shares	Oct. 31, 2019 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2014 USD ($) $ / shares shares	Jun. 30, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Aggregate principal amount				$ 250,000,000			$ 250,000,000
Debt Instrument, Interest Rate, Stated Percentage				1.25%			1.25%
Payments of Debt Issuance Costs									$ 1,524,000	$ 1,385,000	$ 408,000
Conversion price of convertible notes (in USD per share) \| $ / shares				$ 79.89			$ 79.89
Deferred income taxes, net									8,070,000	732,000
Long-term debt									208,853,000	296,985,000
Duration of LIBOR		1 month
Property and equipment, net									38,413,000	40,374,000
Warrant [Member]
Debt Instrument [Line Items]
Common stock purchased (in shares) \| shares				3.1			3.1
Common stock price (in USD per share) \| $ / shares				$ 97.12			$ 97.12
Aggregate proceeds from the sale of warrants				$ 23,600,000
Note Hedge [Member]
Debt Instrument [Line Items]
Common stock purchased (in shares) \| shares				3.1			3.1
Aggregate amount for convertible hedge				$ 42,100,000
Deferred tax asset				16,500,000			$ 16,500,000
Convertible Debt [Member]
Debt Instrument [Line Items]
Aggregate principal amount				$ 250,000,000			$ 250,000,000			250,000,000
Debt Instrument, Interest Rate, Stated Percentage				1.25%			1.25%
Debt Conversion, Original Debt, Due Date of Debt				Oct. 01, 2019
Proceeds from Lines of Credit					$ 217,000,000.0
Repayments of Debt					$ 33,000,000.0
Effective interest rate of debt				4.751%			4.751%
Payments of Debt Issuance Costs							$ 7,300,000
Liability issuance costs				$ 6,200,000			6,200,000
Equity issuance costs				$ 1,100,000			$ 1,100,000
Conversion price of convertible notes (in USD per share) \| $ / shares				$ 79.89			$ 79.89
Deferred income taxes, net				$ 15,400,000			$ 15,400,000
Long-term debt									$ 0	242,617,000
Convertible Debt [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Conversion price of convertible notes (in USD per share) \| $ / shares				$ 97.12			$ 97.12
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit current borrowing capacity			$ 600,000,000			$ 600,000,000
Maturity date			Sep. 27, 2024
Optional increase In revolver			$ 150,000,000
Aggregate principal amount - Senior secured credit facility			$ 750,000,000			$ 750,000,000
Percentage of pledged voting stock in domestic subsidiaries			100.00%
Percentage of pledged voting stock in foreign subsidiaries			65.00%
Maximum consolidated leverage ratio						3.75
Debt Instrument, Covenant, Consolidated Leverage Ratio, Additional Increase						4.00
Minimum interest coverage ratio			3.50			3.50
Actual consolidated leverage ratio									1.64
Actual interest coverage ratio									15.29
Long-term debt									$ 205,000,000	$ 50,000,000
Percentage of weighted average interest rate of borrowings									3.00%	3.70%
Outstanding letters of credit									$ 1,700,000	$ 1,600,000
Unused borrowing capacity under Credit Agreement									393,300,000
Senior Secured Credit Facility [Member] \| Minimum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			0.125%
Senior Secured Credit Facility [Member] \| Minimum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.125%
Senior Secured Credit Facility [Member] \| Maximum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			0.875%
Senior Secured Credit Facility [Member] \| Maximum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.875%
Promissory Note due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.97%
Long-term debt	$ 5,100,000							$ 5,100,000	3,853,000	4,368,000
Debt Instrument, Maturity Date	Mar. 01, 2024
Repayment of Principal at Maturity Date	$ 1,500,000							$ 1,500,000
Duration of LIBOR								1 month
Aircraft [Domain]
Debt Instrument [Line Items]
Property and equipment, net									$ 5,100,000	$ 5,800,000

Fair Value of Financial Instruments

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Certain of our assets and liabilities are measured at fair value. Fair value is defined as the price that would be received to sell an asset or the price that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. GAAP establishes a fair value hierarchy for inputs used in measuring fair value and requires companies to maximize the use of observable inputs and minimize the use of unobservable inputs. The fair value hierarchy consists of three levels based on the objectivity of the inputs as follows:



Level 1 Inputs		Quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

Level 2 Inputs		Quoted prices in active markets for similar assets or liabilities; quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability; or inputs that are derived principally from or corroborated by observable market data by correlation or other means.

Level 3 Inputs		Unobservable inputs for the asset or liability, and include situations in which there is little, if any, market activity for the asset or liability.

The tables below sets forth our fair value hierarchy for our financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2019 and 2018.



	Level 1		Level 2		Level 3		Total
December 31, 2019
Assets:
Convertible debt investment	$	—	$	—	$	49,542	$	49,542
Deferred compensation assets	—		27,445		—		27,445
Total assets	$	—	$	27,445	$	49,542	$	76,987
Liabilities:
Interest rate swap	$	—	$	546	$	—	$	546
Total liabilities	$	—	$	546	$	—	$	546



	Level 1		Level 2		Level 3		Total
December 31, 2018
Assets:
Interest rate swap	$	—	$	753	$	—	$	753
Convertible debt investment	—		—		50,429		50,429
Deferred compensation assets	—		18,205		—		18,205
Total assets	$	—	$	18,958	$	50,429	$	69,387
Liabilities:
Contingent consideration for business acquisitions	$	—	$	—	$	11,441	$	11,441
Total liabilities	$	—	$	—	$	11,441	$	11,441

Interest rate swap: The fair value of our interest rate swap was derived using estimates to settle the interest rate swap agreement, which is based on the net present value of expected future cash flows on each leg of the swap utilizing market-based inputs and discount rates reflecting the risks involved.

Convertible debt investment: In 2014 and 2015, we invested $27.9 million, in the form of zero coupon convertible debt (the "initial convertible notes"), in Shorelight Holdings, LLC (“Shorelight”), the parent company of Shorelight, a U.S.-based company that partners with leading nonprofit universities to increase access to and retention of international students, boost institutional growth, and enhance an institution’s global footprint. In the second quarter of 2019, we amended the initial investment to extend the maturity date by one year to July 1, 2021, unless converted earlier. In the first quarter of 2020, we invested an additional $13.0 million, in the form of 1.69% convertible debt with a senior liquidation preference to the initial convertible notes (the "additional convertible note"); and amended our initial convertible notes to extend the maturity date to January 17, 2024, which coincides with the maturity date of the additional convertible note.

To determine the appropriate accounting treatment for our investment, we performed a variable interest entity (“VIE”) analysis and concluded that Shorelight does not meet the definition of a VIE. We also reviewed the characteristics of our investment to confirm that the convertible notes are not in-substance common stock that would warrant equity method accounting. After we reviewed all of the terms of the investment, we concluded the appropriate accounting treatment to be that of an available-for-sale debt security.

The investment is carried at fair value with unrealized holding gains and losses excluded from earnings and reported in other comprehensive income. We estimate the fair value of our investment using a scenario-based approach in the form of a hybrid analysis that consists of a Monte Carlo simulation model and an expected return analysis. The conclusion of value for our investment is based on the probability-weighted assessment of both scenarios. The hybrid analysis utilizes certain assumptions related to the assumed holding period, the applicable waterfall distribution at the end of the expected holding period based on the rights and privileges of the various instruments, cash flow projections discounted at the risk-adjusted rate, and the concluded equity volatility, all of which are Level 3 inputs. The valuation of our investment as of December 31, 2019 takes into consideration the equity value indication as well as the dilutive impact of the convertible debt issued by Shorelight in the first quarter of 2020, the terms of which were known or knowable as of December 31, 2019. The use of alternative estimates and assumptions could increase or decrease the estimated fair value of the investment, which would result in different impacts to our consolidated balance sheet and comprehensive income. Actual results may differ from our estimates. The fair value of the convertible debt investment is recorded in long-term investments on our consolidated balance sheets.

The table below sets forth the changes in the balance of the convertible debt investment for the years ended December 31, 2019 and 2018.



	Convertible Debt Investment
Balance as of December 31, 2017	$	39,904
Change in fair value of convertible debt investment	10,525
Balance as of December 31, 2018	50,429
Change in fair value of convertible debt investment	(887		)
Balance as of December 31, 2019	$	49,542

Deferred compensation assets: We have a non-qualified deferred compensation plan (the "Plan") for the members of our board of directors and a select group of our employees. The deferred compensation liability is funded by the Plan assets, which consist of life insurance policies maintained within a trust. The cash surrender value of the life insurance policies approximates fair value and is based on third-party broker statements which provide the fair value of the life insurance policies' underlying investments, which are Level 2 inputs. The cash surrender

value of the life insurance policies is invested primarily in mutual funds. The Plan assets are included in other non-current assets on our consolidated balance sheets. Realized and unrealized gains (losses) from the deferred compensation assets are recorded to other income (expense), net in our consolidated statements of operations.

Contingent consideration for business acquisitions: We estimate the fair value of acquisition-related contingent consideration using either a probability-weighted assessment of the specific financial performance targets being measured or a Monte Carlo simulation model, as appropriate. These fair value measurements are based on significant inputs not observable in the market and thus represent Level 3 inputs. The significant unobservable inputs used in the fair value measurements of our contingent consideration are our measures of the estimated payouts based on internally generated financial projections on a probability-weighted basis and discount rates, which typically reflect a risk-free rate. The fair value of the contingent consideration is reassessed quarterly based on assumptions used in our latest projections and input provided by practice leaders and management. Any change in the fair value estimate is recorded in our consolidated statement of operations for that period. The use of alternative estimates and assumptions could increase or decrease the estimated fair value of our contingent consideration liability, which would result in different impacts to our consolidated balance sheets and consolidated statements of operations. Actual results may differ from our estimates.

The table below sets forth the changes in the balance of the contingent consideration for business acquisitions for the years ended December 31, 2019 and 2018.



	Contingent Consideration for Business Acquisitions
Balance as of December 31, 2017	$	22,828
Acquisitions	212
Payments	(11,974		)
Remeasurement of contingent consideration for business acquisitions	381
Unrealized gain due to foreign currency translation	(6		)
Balance as of December 31, 2018	11,441
Payments	(10,041		)
Remeasurement of contingent consideration for business acquisitions	(1,506		)
Unrealized loss due to foreign currency translation	106
Balance as of December 31, 2019	$	—

Financial assets and liabilities not recorded at fair value on a recurring basis are as follows:

Preferred Stock Investment

In the fourth quarter of 2019, we invested $5.0 million, in the form of preferred stock, in Medically Home Group, Inc. ("Medically Home"), a healthcare technology-enabled services company. To determine the appropriate accounting treatment for our investment, we performed a VIE analysis and concluded that Medically Home does not meet the definition of a VIE. We also reviewed the characteristics of our investment to confirm that the preferred stock is not in-substance common stock that would warrant equity method accounting. After we reviewed all of the terms of the investment, we concluded the appropriate accounting treatment for our investment in Medically Home to be that of an equity security with no readily determinable fair value. We elected to apply the measurement alternative at the time of the purchase and will continue to do so until the investment does not qualify to be so measured. Under the measurement alternative, the investment is carried at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment in Medically Home. On a quarterly basis, we review the information available to determine whether an orderly and observable transaction for the same or similar equity instrument occurred, and remeasure the fair value of the preferred stock using such identified transactions, with changes in the fair value recorded in consolidated statement of operations. Following our purchase, there has been no impairment, nor any observable price changes to our investment.

Senior Secured Credit Facility

The carrying value of our borrowings outstanding under our senior secured credit facility is stated at cost. Our carrying value approximates fair value, using Level 2 inputs, as the senior secured credit facility bears interest at variable rates based on current market rates as set forth in the Amended Credit Agreement. Refer to Note 7 “Financing Arrangements” for additional information on our senior secured credit facility.

Promissory Note due 2024

The carrying value of our promissory note due 2024 is stated at cost. Our carrying value approximates fair value, using Level 2 inputs, as the promissory note bears interest at rates based on current market rates as set forth in the terms of the promissory note. Refer to Note 7 “Financing Arrangements” for additional information on our promissory note due 2024.

Convertible Notes

The carrying amount and estimated fair value of the Convertible Notes as of December 31, 2018 follows. The Convertible Notes matured on October 1, 2019.



	December 31, 2018
	Carrying Amount		Estimated Fair Value
1.25% convertible senior notes due 2019	$	242,617	$	242,940

The difference between the $250 million principal amount of the Convertible Notes and the carrying amount shown above represented the unamortized debt discount and issuance costs. As of December 31, 2018, the carrying value of the equity component of $39.3 million was unchanged from the date of issuance. Refer to Note 7 “Financing Arrangements” for additional information on our Convertible Notes. The estimated fair value of the Convertible Notes was determined based on the quoted bid price of the Convertible Notes in an over-the-counter market, which is a Level 2 input, on the last day of trading for the year ended December 31, 2018.

Cash and cash equivalents are stated at cost, which approximates fair market value. The carrying values of all other financial instruments not described above reasonably approximate fair market value due to the nature of the financial instruments and the short-term maturity of these items.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Leases Schedule of Lease Costs (Details) $ in Thousands	12 Months Ended
Leases Schedule of Lease Costs (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating Lease, Cost	$ 11,883
Short-term Lease, Cost	322
Variable Lease, Cost	3,656
Sublease Income	(2,638)
Lease, Cost	$ 13,223

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Use of Estimates

Revenue Recognition

Provisions are recorded for the estimated realization adjustments on all engagements, including engagements for which fees are subject to review by the bankruptcy courts.

Commissions Expense, Policy [Policy Text Block]

Capitalized Sales Commissions

Allowances for Doubtful Accounts and Unbilled Services

Direct Costs and Reimbursable Expenses

Cash and Cash Equivalents

We consider all highly liquid investments, including overnight investments and commercial paper, with original maturities of three months or less to be cash equivalents.

Concentrations of Credit Risk

Investments

Long-term Investments

Our long-term investments consist of our convertible debt investment in Shorelight Holdings, LLC ("Shorelight") and preferred stock investment in Medically Home Group, Inc. ("Medically Home").

Property and Equipment

Deferred Lease Incentives

Leases

Software Development Costs

Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]

Intangible Assets Other Than Goodwill

Impairment of Long-Lived Assets

Goodwill

Business Combinations

Income Taxes

Share-Based Compensation

Sponsorship and Advertising Costs

Sponsorship and advertising costs are expensed as incurred.

Debt Issuance Costs

At issuance, we separated the Convertible Notes into liability and equity components. The carrying amount of the liability component was determined by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying value of the equity component representing the conversion option, which was recognized as a debt discount, was determined by deducting the fair value of the liability component from the proceeds of the Convertible Notes. The debt discount was amortized to interest expense using the effective interest method over the term of the Convertible Notes. The equity component was not remeasured as it continued to meet the conditions for equity classification. Refer to Note 7 “Financing Arrangements” for further information regarding the Convertible Notes.

Debt Issuance Costs

Foreign Currency

Foreign currency transaction gains and losses are included in other income, net on the consolidated statement of operations.

Segment Reporting

New Accounting Pronouncements

Recently Adopted



	As of December 31, 2018		ASC 842 Adjustment			As of January 1, 2019
Assets
Operating lease right-of-use assets	$	—	$	56,463		$	56,463

Liabilities
Accrued expenses and other current liabilities	$	17,207	$	(2,557	)	$	14,650
Current maturities of operating lease liabilities	$	—	$	10,537		$	10,537
Deferred compensation and other liabilities	$	20,875	$	(536	)	$	20,339
Deferred lease incentives	$	13,693	$	(13,693	)	$	—
Operating lease liabilities, net of current portion	$	—	$	62,712		$	62,712

Not Yet Adopted

Derivatives, Policy [Policy Text Block]

Acquisitions

12 Months Ended

Dec. 31, 2019

Business Combinations [Abstract]

Acquisitions

During the twelve months ended December 31, 2019 and 2018, we completed no acquisitions that were significant to our consolidated financial statements individually or in the aggregate.

2017

Pope Woodhead and Associates Limited

On January 9, 2017, we completed our acquisition of Pope Woodhead and Associates Limited ("Pope Woodhead"), a U.K.-based consulting firm providing market access capabilities to assist clients in developing value propositions for innovative medicines and technologies. The acquisition expands our life sciences strategy expertise and strengthens our ability to lead clients through complex payer and regulatory environments. Pope Woodhead's results of operations have been included in our consolidated financial statements and the results of operations of our Business Advisory segment from the date of acquisition.

ADI Strategies, Inc.

On April 1, 2017, we completed our acquisition of the international assets of ADI Strategies, Inc. ("ADI Strategies") in Dubai and India. We acquired the U.S. assets of ADI Strategies in the second quarter of 2016. ADI Strategies is a leading enterprise performance management, risk management and business intelligence firm. The international results of operations of ADI Strategies have been included in our consolidated financial statements and results of operations of the Business Advisory segment from the date of acquisition. During the second quarter of 2018, we sold our Middle East practice, which primarily consisted of the international assets of the ADI Strategies acquisition, to a former employee who was the practice leader of that business at the time.

The acquisitions of ADI Strategies and Pope Woodhead are not significant to our consolidated financial statements individually or in the aggregate as of and for the twelve months ended December 31, 2017.

Innosight Holdings, LLC

On March 1, 2017, we acquired 100% of the membership interests of Innosight Holdings, LLC ("Innosight"). Innosight is a growth strategy firm focused on helping companies navigate disruptive change and manage strategic transformation. Together with Innosight, we use our strategic, operational, and technology capabilities to help clients across multiple industries develop pioneering solutions to address disruption and achieve sustained growth.

The acquisition date fair value of the consideration transferred for Innosight was $113.6 million, which consisted of the following:



Fair value of consideration transferred	March 1, 2017
Cash	$	90,725
Common stock	9,560
Contingent consideration liability	12,050
Net working capital adjustment	1,272
Total consideration transferred	$	113,607

We funded the cash component of the purchase price with cash on hand and borrowings of $89.0 million under our senior secured credit facility. We issued 221,558 shares of our common stock as part of the consideration transferred, with an acquisition date fair value of $9.6 million based on our common stock's closing price of $43.15 on the date of acquisition. The contingent consideration liability of $12.1 million represents the acquisition date fair value of the contingent consideration arrangement, pursuant to which we may be required to pay additional consideration to the sellers if specific financial performance targets are met over a four-year term. The maximum amount of contingent consideration that may be paid is $35.0 million. See Note 13 "Fair Value of Financial Instruments" for additional information on the valuation of contingent consideration liabilities.

The acquisition was accounted for using the acquisition method of accounting. Tangible and identifiable intangible assets acquired and liabilities assumed were recorded at fair value as of the acquisition date.

The following table summarizes the allocation of the purchase price to the fair value of assets acquired and liabilities assumed as of the acquisition date.



	March 1, 2017
Assets acquired:
Accounts receivable	$	7,752
Unbilled services	1,881
Prepaid expenses and other current assets	468
Property and equipment	419
Intangible assets	18,015
Liabilities assumed:
Accounts payable	531
Accrued expenses and other current liabilities	894
Accrued payroll and related benefits	883
Deferred revenues	30
Total identifiable net assets	26,197
Goodwill	87,410
Total purchase price	$	113,607

The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the acquisition date.



	Fair Value		Useful Life in Years
Customer relationships	$	9,500	6
Trade name	6,000		6
Customer contracts	1,000		1
Non-compete agreements	1,300		5
Favorable lease contract	215		1
Total intangible assets subject to amortization	$	18,015

The weighted average amortization period for the identifiable intangible assets shown above is 5.6 years. Customer relationships and customer contracts represent the fair values of the underlying relationships and agreements with Innosight customers. The trade name represents the fair value of the brand and name recognition associated with the marketing of Innosight's service offerings. Non-compete agreements represent the value derived from preventing certain Innosight executives from entering into or starting a similar, competing business. The favorable lease contract represents the difference between the fair value and minimum lease obligations under the current outstanding lease. Goodwill is recognized for the excess of purchase price over the net fair value of assets acquired and liabilities assumed, and largely reflects the expanded market opportunities expected from combining the service offerings of Huron and Innosight, as well as the assembled workforce of Innosight. Goodwill recognized in conjunction with the acquisition of Innosight was recorded in the Business Advisory segment. Goodwill of $87.4 million is expected to be deductible for income tax purposes.

Innosight’s results of operations have been included in our consolidated statements of operations and results of operations of our Business Advisory segment from the date of acquisition. For the year ended December 31, 2017, revenues from Innosight were $34.3 million and operating loss was $0.9 million, which included $3.4 million of amortization expense for intangible assets acquired. In connection with the acquisition of Innosight, we incurred $1.7 million of transaction and acquisition-related expenses in 2017. These costs are recorded in selling, general and administrative expenses.

The following unaudited supplemental pro forma information summarizes the combined results of operations of Huron and Innosight as though the companies were combined on January 1, 2016.



	Year Ended December 31, 2017
Revenues	$	741,695
Net income (loss) from continuing operations	$	(167,346	)
Net income (loss) from continuing operations per share - basic	$	(7.79	)
Net income (loss) from continuing operations per share - diluted	$	(7.79	)

The historical financial information has been adjusted to give effect to pro forma adjustments consisting of intangible asset amortization expense, acquisition-related costs, interest expense, and the related income tax effects. The unaudited pro forma information above includes adjustments to include additional expense of $0.6 million for the year ended December 31, 2017. Additionally, the historical financial information has been adjusted to give effect to the shares issued as consideration. All of these adjustments are based upon currently available information and certain assumptions. Therefore, the pro forma consolidated results are not necessarily indicative of what our consolidated results of operations actually would have been had we completed the acquisition on January 1, 2016. The historical results included in the pro forma consolidated results do not purport to project future results of operations of the combined companies nor do they reflect the expected realization of any cost savings or revenue synergies associated with the acquisition.

Leases Leases

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Leases of Lessee Disclosure [Text Block]

Leases

We lease office space, data centers and certain equipment under operating leases expiring on various dates through 2029, with various renewal options that can extend the lease terms by one to ten years. Our operating leases include fixed payments plus, in some cases, scheduled base rent increases over the term of the lease. Certain leases require variable payments of real estate taxes, insurance and

operating expenses. We exclude these variable payments from the measurements of our lease liabilities and expense them as incurred. We elected the practical expedient to combine lease and nonlease components. No lease agreements contain any residual value guarantees or material restrictive covenants. As of December 31, 2019, we have not entered into any material finance leases. We sublease certain office spaces to third parties resulting from restructuring activities in certain locations.

Operating lease right-of-use ("ROU") assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset group to which the operating lease ROU asset is assigned may not be recoverable. First, we test the asset group for recoverability by comparing the undiscounted cash flows of the asset group, which include expected future lease and nonlease payments under the lease agreement offset by expected sublease income, to the carrying amount of the asset group. If the first step of the long-lived asset impairment test concludes that the carrying amount of the asset group is not recoverable, we perform the second step of the long-lived asset impairment test by comparing the fair value of the asset group to its carrying amount and recognizing a lease impairment charge for the amount by which the carrying amount exceeds the fair value. To estimate the fair value of the asset group, we rely on a discounted cash flow approach using market participant assumptions of the expected cash flows and discount rate. During 2019, we recorded $0.8 million of lease impairment charges for office spaces vacated during the year, of which $0.6 million was allocated to the operating lease ROU assets and $0.2 million was allocated to the leasehold improvements based on their relative carrying amounts. The $0.8 million lease impairment charge was recognized in restructuring charges on our consolidated statement of operations. See Note 11 "Restructuring Charges" for additional information on our restructuring activities.

In the fourth quarter of 2019, we entered into an amendment to the office lease agreement for our principal executive offices in Chicago, Illinois, which resulted in a non-cash gain on lease modification of $0.8 million. Among other items, this amendment i) extends the term of the lease from September 30, 2024 to September 30, 2029; ii) provides a renewal option to extend the lease for an additional five year period to September 30, 2034; iii) terminates the lease with respect to certain leased spaces previously vacated; iv) provides abatement of certain future base rent payments and our pro rata share of operating expenses and taxes; and v) provides a one-time cash payment from the lessor as an incentive.

Additional information on our operating leases as of December 31, 2019 follows.



Balance Sheet	December 31, 2019
Operating lease right-of-use assets	$	54,954

Current maturities of operating lease liabilities	$	7,469
Operating lease liabilities, net of current portion	69,233
Total lease liabilities	$	76,702



Lease Cost	Year Ended December 31, 2019
Operating lease cost	$	11,883
Short-term leases ⁽¹⁾	322
Variable lease costs	3,656
Sublease income	(2,638		)
Net lease cost ^(2)(3)(4)	$	13,223


(1)	Includes variable lease costs related to short-term leases.


(2)	Net lease cost includes $0.4 million for the year ended December 31, 2019, recorded as restructuring charges as they relate to vacated office spaces. See Note 11 "Restructuring Charges" for additional information on our vacated office spaces.


(3)	Net lease cost includes $0.3 million for the year ended December 31, 2019, related to vacated office spaces directly related to discontinued operations.


(4)	Rent expense, including operating expenses, real estate taxes and insurance, recorded under ASC 840 for the years ended December 31, 2018 and 2017 was $15.1 million and $14.3 million, respectively.

The table below summarizes the remaining expected lease payments under our operating leases as of December 31, 2019.



Future Lease Payments	December 31, 2019
2020	$	9,772
2021	12,039
2022	11,502
2023	11,470
2024	10,893
Thereafter	35,211
Total operating lease payments	$	90,887
Less: imputed interest	(14,185		)
Present value of operating lease liabilities	$	76,702

The table below summarizes the future minimum rental commitments, as defined by ASC 840, under our non-cancelable operating leases as of December 31, 2018.



Lease Payments	December 31, 2018 ⁽¹⁾
2019	$	13,701
2020	12,724
2021	11,590
2022	10,766
2023	10,707
Thereafter	27,033
Total	$	86,521


(1)	As of December 31, 2018, the expected total future minimum sublease income to be received was $10.2 million.



Other Information	Year Ended December 31, 2019
Cash paid for operating lease liabilities	$	13,902
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	$	12,842

Weighted average remaining lease term - operating leases	7.7 years
Weighted average discount rate - operating leases	4.3		%

Leases Schedule of Operating Lease Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 54,954	$ 56,463	$ 0
Operating Lease, Liability, Current	7,469	10,537	0
Operating Lease, Liability, Noncurrent	69,233	$ 62,712	$ 0
Operating Lease, Liability	$ 76,702

Equity Incentive Plans - Schedule of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Number of Options (in thousands)
Outstanding, shares, beginning balance	154,000
Stock option awards granted	0
Exercise of stock options, shares	(48,000)
Forfeited or expired, shares	0
Outstanding, shares, ending balance	106,000	154,000
Exercisable, shares, ending balance	106,000
Beginning balance, weighted average exercise price (in USD per share)	$ 30.52
Ending balance, weighted average exercise price (in USD per share)	32.57	$ 30.52
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	25.97
Exercisable, weighted average exercise price (in USD per share)	$ 32.57
Weighted-average remaining contractual term (years), option outstanding	1 year 10 months 24 days	2 years 6 months
Weighted-average remaining contractual term (years), options exercisable	1 year 10 months 24 days
Aggregate intrinsic value, option outstanding, beginning balance	$ 3.2
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	1.6
Aggregate intrinsic value, options exercisable, ending balance	3.8
Aggregate intrinsic value, option outstanding, ending balance	$ 3.8	$ 3.2

Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Summary of Allowances for Doubtful Accounts and Unbilled Services and Valuation Allowance for Deferred Tax Assets



	Beginning balance		Additions ⁽¹⁾	Deductions	Ending balance
Year ended December 31, 2017:
Allowances for doubtful accounts and unbilled services	$	21,259	43,888	40,648	$	24,499
Valuation allowance for deferred tax assets	$	626	793	172	$	1,247
Year ended December 31, 2018:
Allowances for doubtful accounts and unbilled services	$	24,499	49,390	51,648	$	22,241
Valuation allowance for deferred tax assets	$	1,247	2,314	418	$	3,143
Year ended December 31, 2019:
Allowances for doubtful accounts and unbilled services	$	22,241	69,979	73,552	$	18,668
Valuation allowance for deferred tax assets	$	3,143	1	2,128	$	1,016

(1)

Fair Value of Financial Instruments - (Policies)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Fair value measurement policy



Level 1 Inputs		Quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

Level 2 Inputs		Quoted prices in active markets for similar assets or liabilities; quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability; or inputs that are derived principally from or corroborated by observable market data by correlation or other means.

Level 3 Inputs		Unobservable inputs for the asset or liability, and include situations in which there is little, if any, market activity for the asset or liability.

Selected Quarterly Financial Data (unaudited) - Selected Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Revenue from Contract with Customer, Including Assessed Tax	$ 232,269	$ 219,289	$ 220,754	$ 204,445	$ 205,454	$ 198,448	$ 197,544	$ 193,679	$ 876,757	$ 795,125	$ 732,570
Total revenues and reimbursable expenses	255,199	242,925	244,288	223,062	228,680	219,744	218,277	211,298	965,474	877,999	807,745
Reimbursable expenses	(22,930)	(23,636)	(23,534)	(18,617)	(23,226)	(21,296)	(20,733)	(17,619)	(88,717)	(82,874)	(75,175)
Gross profit	77,315	75,158	77,832	65,496	71,834	68,893	68,820	59,745
Operating income	18,499	20,576	17,875	6,756	17,075	13,561	19,138	2,322	63,706	52,096	(207,456)
Net income from continuing operations	14,354	13,706	10,569	3,350	3,055	8,249	5,862	(3,222)	41,979	13,944	(170,505)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(41)	(52)	(97)	(46)	6	228	(490)	(42)	(236)	(298)	388
Net income	$ 14,313	$ 13,654	$ 10,472	$ 3,304	$ 3,061	$ 8,477	$ 5,372	$ (3,264)	$ 41,743	$ 13,646	$ (170,117)
Net earnings per basic share:
Net income from continuing operations, per basic share (in USD per share)	$ 0.65	$ 0.62	$ 0.48	$ 0.15	$ 0.14	$ 0.38	$ 0.27	$ (0.15)	$ 1.91	$ 0.64	$ (7.95)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0	0	0	0	0	0.01	(0.02)	0	(0.01)	(0.01)	0.02
Net income, per basic share (in USD per share)	0.65	0.62	0.48	0.15	0.14	0.39	0.25	(0.15)	1.90	0.63	(7.93)
Net earnings per diluted share:
Net income from continuing operations, per diluted share (in USD per share)	0.63	0.61	0.47	0.15	0.14	0.37	0.27	(0.15)	1.87	0.63	(7.95)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	0	0	0	0	0	0.01	(0.02)	0	(0.02)	(0.01)	0.02
Net income, per diluted share (in USD per share)	$ 0.63	$ 0.61	$ 0.47	$ 0.15	$ 0.14	$ 0.38	$ 0.25	$ (0.15)	$ 1.85	$ 0.62	$ (7.93)
Weighted average shares used in calculating earnings per share:
Basic (shares)	22,051	22,052	21,997	21,868	21,774	21,745	21,709	21,592	21,993	21,706	21,439
Diluted (shares)	22,676	22,561	22,400	22,311	22,294	22,110	21,918	21,592	22,507	22,058	21,439

Goodwill and Intangible Assets - Amortization (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Year Two	$ 12,638
Finite-Lived Intangible Assets, Amortization Expense, Year Three	8,379
Finite-Lived Intangible Assets, Amortization Expense, Year Five	6,111
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	3,512
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	$ 741

Selected Quarterly Financial Data (unaudited)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data (unaudited)

Selected Quarterly Financial Data (Unaudited)



	Quarter Ended
2019	Mar. 31			Jun. 30			Sep. 30			Dec. 31
Revenues	$	204,445		$	220,754		$	219,289		$	232,269
Reimbursable expenses	18,617			23,534			23,636			22,930
Total revenues and reimbursable expenses	223,062			244,288			242,925			255,199
Gross profit	65,496			77,832			75,158			77,315
Operating income	6,756			17,875			20,576			18,499
Net income from continuing operations	3,350			10,569			13,706			14,354
Loss from discontinued operations, net of tax	(46		)	(97		)	(52		)	(41		)
Net income	3,304			10,472			13,654			14,313
Net earnings per basic share:
Net income from continuing operations	$	0.15		$	0.48		$	0.62		$	0.65
Loss from discontinued operations, net of tax	—			—			—			—
Net income	$	0.15		$	0.48		$	0.62		$	0.65
Net earnings per diluted share:
Net income from continuing operations	$	0.15		$	0.47		$	0.61		$	0.63
Loss from discontinued operations, net of tax	—			—			—			—
Net income	$	0.15		$	0.47		$	0.61		$	0.63
Weighted average shares used in calculating earnings per share:
Basic	21,868			21,997			22,052			22,051
Diluted	22,311			22,400			22,561			22,676



	Quarter Ended
2018	Mar. 31			Jun. 30			Sep. 30		Dec. 31
Revenues	$	193,679		$	197,544		$	198,448	$	205,454
Reimbursable expenses	17,619			20,733			21,296		23,226
Total revenues and reimbursable expenses	211,298			218,277			219,744		228,680
Gross profit	59,745			68,820			68,893		71,834
Operating income	2,322			19,138			13,561		17,075
Net income (loss) from continuing operations	(3,222		)	5,862			8,249		3,055
Income (loss) from discontinued operations, net of tax	(42		)	(490		)	228		6
Net income (loss)	(3,264		)	5,372			8,477		3,061
Net earnings (loss) per basic share:
Net income (loss) from continuing operations	$	(0.15	)	$	0.27		$	0.38	$	0.14
Income (loss) from discontinued operations, net of tax	—			(0.02		)	0.01		—
Net income (loss)	$	(0.15	)	$	0.25		$	0.39	$	0.14
Net earnings (loss) per diluted share:
Net income (loss) from continuing operations	$	(0.15	)	$	0.27		$	0.37	$	0.14
Income (loss) from discontinued operations, net of tax	—			(0.02		)	0.01		—
Net income (loss)	$	(0.15	)	$	0.25		$	0.38	$	0.14
Weighted average shares used in calculating earnings per share:
Basic	21,592			21,709			21,745		21,774
Diluted	21,592			21,918			22,110		22,294

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Document Period End Date	Dec. 31, 2019
Additional Income Tax Expense or Benefit due to Tax Reform		$ 600
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount		$ 200
Effective Tax Rate For Discontinued Operations	26.00%	26.70%	60.00%
Deferred Tax Assets, Valuation Allowance	$ 1,016	$ 3,143
Tax Credit Carryforward, Amount	$ 500
Tax Credit Carryforward, Expiration Date	Dec. 31, 2020
Operating Loss Carryforwards	$ 300
Unrecognized Income Tax Benefits	50	900	$ 813	$ 3,340
Income Tax Examination, Penalties and Interest Accrued	$ 0	100
Foreign[Member]
Income Tax Disclosure [Line Items]
Income Tax Examination Period	2014 through 2018
State and Local Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Income Tax Examination Period	2013 through 2018
Federal [Member]
Income Tax Disclosure [Line Items]
Income Tax Examination Period	2016 through 2018
Huron Legal [Member] \| Discontinued operations [Member]
Income Tax Disclosure [Line Items]
Discontinued Operation, Tax Effect of Discontinued Operation	$ 100	100	600
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	$ 300	400	$ 1,000
Foreign[Member]
Income Tax Disclosure [Line Items]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount		$ 2,200

Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
Consolidated Statements of Cash Flows $ in Thousands	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Cash flows from operating activities:
Net income	$ 41,743	$ 13,646	$ (170,117)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	34,405	39,311	50,089
Noncash Operating Lease Expense	8,397	0	0
Share-based compensation	24,213	18,818	14,838
Amortization of debt discount and issuance costs	8,264	10,313	10,203
Goodwill, Impairment Loss	0	0	253,093
Accounts Receivable, Credit Loss Expense (Reversal)	250	657	3,217
Deferred income taxes	8,795	10,717	(53,753)
Loss (gain) on sale of businesses	0	5,807	(931)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	1,506	(381)	(1,111)
Other Noncash Expense	16	0	0
Changes in operating assets and liabilities, net of acquisitions and divestiture:
(Increase) decrease in receivables from clients	(10,123)	(10,509)	1,650
(Increase) decrease in unbilled services	(10,269)	(11,094)	(4,332)
(Increase) decrease in current income tax receivable / payable, net	4,442	(2,607)	210
(Increase) decrease in other assets	(144)	(1,361)	(366)
Increase (decrease) in accounts payable and accrued liabilities	(6,884)	(8,212)	3,732
Increase (decrease) in accrued payroll and related benefits	30,339	35,481	(10,966)
Increase (decrease) in deferred revenues	282	310	2,117
Net cash provided by operating activities	132,220	101,658	99,795
Cash flows from investing activities:
Purchases of property and equipment, net	(13,240)	(8,936)	(24,402)
Investment in life insurance policies	(4,703)	(2,037)	(1,826)
Proceeds from Life Insurance Policy	0	0	2,889
Purchases of businesses, net of cash acquired	(2,500)	(215)	(106,915)
Payments to Acquire Investments	(5,000)	0	0
Capitalization of internally developed software	(10,312)	(6,069)	(1,370)
Proceeds from note receivable	0	1,040	1,177
Proceeds from Sale of Property, Plant, and Equipment	753	0	0
Proceeds from Divestiture of Businesses, Net of Cash Divested	0	(2,345)	1,499
Net cash used in investing activities	(35,002)	(18,562)	(128,948)
Cash flows from financing activities:
Proceeds from exercises of stock options	1,244	937	0
Shares redeemed for employee tax withholdings	(5,382)	(3,187)	(4,846)
Share repurchases	(12,985)	0	0
Proceeds from bank borrowings	347,000	204,300	277,500
Repayments of bank borrowings	(192,515)	(259,801)	(240,745)
Repayments of Convertible Debt	(250,000)	0	0
Payments for debt issuance costs	(1,524)	(1,385)	(408)
Payment for Contingent Consideration Liability, Financing Activities	4,674	7,554	2,680
Net cash provided by (used in) financing activities	(118,836)	(66,690)	28,821
Effect of exchange rate changes on cash	115	(208)	214
Net increase (decrease) in cash and cash equivalents	(21,503)	16,198	(118)
Cash and cash equivalents at beginning of the period	33,107	16,909	17,027
Cash and cash equivalents at end of the period	11,604	33,107	16,909
Non-cash investing and financing activities:
Property and equipment expenditures and capitalized software included in accounts payable and accrued expenses	2,600	2,358	1,567
Notes Assumed	0	0	5,113
Contingent consideration related to business acquisitions	0	212	15,489
Share Repurchases Initiated but not yet Settled	1,234	0	0
Common stock issued related to business acquisition	0	0	9,560
Cash paid during the year for:
Interest	7,971	8,887	9,068
Income taxes	$ 1,429	$ 3,349	$ 5,399

Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The tables below sets forth our fair value hierarchy for our financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2019 and 2018.



	Level 1		Level 2		Level 3		Total
December 31, 2019
Assets:
Convertible debt investment	$	—	$	—	$	49,542	$	49,542
Deferred compensation assets	—		27,445		—		27,445
Total assets	$	—	$	27,445	$	49,542	$	76,987
Liabilities:
Interest rate swap	$	—	$	546	$	—	$	546
Total liabilities	$	—	$	546	$	—	$	546



	Level 1		Level 2		Level 3		Total
December 31, 2018
Assets:
Interest rate swap	$	—	$	753	$	—	$	753
Convertible debt investment	—		—		50,429		50,429
Deferred compensation assets	—		18,205		—		18,205
Total assets	$	—	$	18,958	$	50,429	$	69,387
Liabilities:
Contingent consideration for business acquisitions	$	—	$	—	$	11,441	$	11,441
Total liabilities	$	—	$	—	$	11,441	$	11,441

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]

The carrying amount and estimated fair value of the Convertible Notes as of December 31, 2018 follows. The Convertible Notes matured on October 1, 2019.



	December 31, 2018
	Carrying Amount		Estimated Fair Value
1.25% convertible senior notes due 2019	$	242,617	$	242,940

Convertible Debt Securities [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The table below sets forth the changes in the balance of the convertible debt investment for the years ended December 31, 2019 and 2018.



	Convertible Debt Investment
Balance as of December 31, 2017	$	39,904
Change in fair value of convertible debt investment	10,525
Balance as of December 31, 2018	50,429
Change in fair value of convertible debt investment	(887		)
Balance as of December 31, 2019	$	49,542

Contingent Consideration Liability [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The table below sets forth the changes in the balance of the contingent consideration for business acquisitions for the years ended December 31, 2019 and 2018.



	Contingent Consideration for Business Acquisitions
Balance as of December 31, 2017	$	22,828
Acquisitions	212
Payments	(11,974		)
Remeasurement of contingent consideration for business acquisitions	381
Unrealized gain due to foreign currency translation	(6		)
Balance as of December 31, 2018	11,441
Payments	(10,041		)
Remeasurement of contingent consideration for business acquisitions	(1,506		)
Unrealized loss due to foreign currency translation	106
Balance as of December 31, 2019	$	—

Acquisitions (Tables) - Innosight Holdings, LLC [Member]

12 Months Ended

Dec. 31, 2019

Acquired Finite-Lived Intangible Assets [Line Items]

Summary of Fair Value of Consideration Transferred

The acquisition date fair value of the consideration transferred for Innosight was $113.6 million, which consisted of the following:



Fair value of consideration transferred	March 1, 2017
Cash	$	90,725
Common stock	9,560
Contingent consideration liability	12,050
Net working capital adjustment	1,272
Total consideration transferred	$	113,607

Preliminary Allocation of the Purchase Price to the Fair Value of Assets Acquired and Liabilities Assumed

The following table summarizes the allocation of the purchase price to the fair value of assets acquired and liabilities assumed as of the acquisition date.



	March 1, 2017
Assets acquired:
Accounts receivable	$	7,752
Unbilled services	1,881
Prepaid expenses and other current assets	468
Property and equipment	419
Intangible assets	18,015
Liabilities assumed:
Accounts payable	531
Accrued expenses and other current liabilities	894
Accrued payroll and related benefits	883
Deferred revenues	30
Total identifiable net assets	26,197
Goodwill	87,410
Total purchase price	$	113,607

Schedule of Components of Identifiable Intangible Assets Acquired and their Estimated Useful Lives

The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the acquisition date.



	Fair Value		Useful Life in Years
Customer relationships	$	9,500	6
Trade name	6,000		6
Customer contracts	1,000		1
Non-compete agreements	1,300		5
Favorable lease contract	215		1
Total intangible assets subject to amortization	$	18,015

Summary of Supplemental Pro Forma Consolidated Results of Operations

The following unaudited supplemental pro forma information summarizes the combined results of operations of Huron and Innosight as though the companies were combined on January 1, 2016.



	Year Ended December 31, 2017
Revenues	$	741,695
Net income (loss) from continuing operations	$	(167,346	)
Net income (loss) from continuing operations per share - basic	$	(7.79	)
Net income (loss) from continuing operations per share - diluted	$	(7.79	)

Valuation and Qualifying Accounts - Summary of Allowances for Doubtful Accounts and Unbilled Services and Valuation Allowance for Deferred Tax Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowances for doubtful accounts and unbilled services [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning balance	$ 22,241	$ 24,499	$ 21,259
Additions	69,979	49,390	43,888
Deductions	73,552	51,648	40,648
Ending balance	18,668	22,241	24,499
Valuation allowance for deferred tax assets [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning balance	3,143	1,247	626
Additions	1	2,314	793
Deductions	2,128	418	172
Ending balance	$ 1,016	$ 3,143	$ 1,247

Fair Value of Financial Instruments Fair Value of Financial Instruments - Contingent Consideration Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	$ 546	$ 11,441
Contingent Consideration Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		212
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements	(10,041)	(11,974)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease)	(1,506)	381
Contingent Consideration Liability [Member] \| Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	11,441	$ 22,828
Foreign Currency Gain (Loss) [Member] \| Contingent Consideration Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease)	$ 106	$ (6)

Equity Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Restricted Stock Activity

The table below summarizes the restricted stock activity for the year ended December 31, 2019.



	Number of Shares						Weighted Average Grant Date Fair Value (in dollars)
	2012 Omnibus Incentive Plan		Stock Ownership Participation Program		Total		Weighted Average Grant Date Fair Value (in dollars)
Nonvested restricted stock at December 31, 2018	747		11		758		$	43.08
Granted	341		12		353		$	48.57
Vested	(284	)	(10	)	(294	)	$	46.25
Forfeited	(30	)	(1	)	(31	)	$	45.24
Nonvested restricted stock at December 31, 2019	774		12		786		$	44.27

Schedule of Performance-Based Stock Activity



	Number of Shares		Weighted Average Grant Date Fair Value (in dollars)
Nonvested performance-based stock at December 31, 2018	436		$	36.81
Granted ⁽¹⁾	281		$	47.93
Vested	(73	)	$	40.69
Forfeited ⁽²⁾	(144	)	$	36.06
Nonvested performance-based stock at December 31, 2019 ⁽³⁾	500		$	42.72


(1)	Shares granted in 2019 are presented at the stated target, which represents the base number of shares that could be earned. Actual shares earned may be below or, for certain grants, above the target based on the achievement of specific financial goals.


(2)	Forfeited shares include shares forfeited as a result of not meeting the performance criteria of the award as well as shares forfeited upon termination.

(3)

Schedule of Stock Option Activity

Stock option activity for the year ended December 31, 2019 was as follows:



	Number of Options (in thousands)		Weighted Average Exercise Price (in dollars)		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in millions)
Outstanding at December 31, 2018	154		$	30.52	2.5	$	3.2
Granted	—
Exercised	(48	)	$	25.97		$	1.6
Forfeited or expired	—
Outstanding at December 31, 2019 ⁽¹⁾	106		$	32.57	1.9	$	3.8
Exercisable at December 31, 2019	106		$	32.57	1.9	$	3.8

(1)

Of the 106,000 outstanding options, approximately 74,000 were granted under the 2004 Omnibus Stock Plan, and the remaining 32,000 options were granted under the 2012 Omnibus Incentive Plan.

Derivative Instruments and Hedging Activity - Additional Information (Detail) - USD ($) $ in Millions		12 Months Ended
	Jun. 22, 2017	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest rate swap agreement, effective date	Aug. 31, 2017
Interest rate swap agreement, end date	Aug. 31, 2022
Interest rate swap agreement for a notional amount	$ 50.0
Duration of LIBOR	1 month
Percentage of fixed rate	1.90%
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred		$ 0.1
Loss reclassification from accumulated OCI to income, estimate of time to transfer		12 months

Income Taxes - Reconciliation of Statutory Income Tax Rate to Our Effective Tax Rate for Continuing Operations (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
At U.S. statutory tax rate	21.00%	21.00%	35.00%
State income taxes, net of federal benefit	6.10%	7.20%	2.70%
Effective Income Tax Rate Reconciliation, Disallowed Executive Compensation, Percent	2.00%	2.50%	0.00%
Meals and entertainment	1.60%	2.00%	(0.30%)
Tax credits / Section 199 Deduction	(3.10%)	(1.40%)	0.20%
Valuation allowance	(2.90%)	6.90%	(0.20%)
Effective Income Tax Rate Reconciliation, Realized Investment (Gains) Losses, Percent	(1.80%)	1.30%	0.40%
Net tax (benefit) expense related to “check-the-box” election (1)	(1.40%)	0.00%	1.20%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Percent	(1.10%)	4.90%	(0.80%)
Foreign source income	(0.50%)	(1.70%)	0.10%
Effective Income Tax Rate Reconciliation, Contingent Consideration Liabilities, Change In Fair Value, Percent	0.00%	2.40%	0.00%
Effective Income Tax Rate Reconciliation, Global Intangible Low-Taxed Income, Percent	0.00%	2.10%	0.00%
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent	0.00%	0.80%	(0.30%)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0.00%	(2.30%)	(3.40%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent	0.00%	0.00%	(10.20%)
Other	0.10%	(1.00%)	(1.00%)
Effective income tax expense rate for continuing operations	20.00%	44.70%	23.40%

Property and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Depreciation expense for property and equipment	$ 13.0	$ 13.4	$ 13.3

Income Taxes - Net Deferred Tax Liabilities for Continuing Operations (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Deferred tax asset, operating lease liabilities	$ 20,541
Accrued payroll and other liabilities	12,289	$ 6,737
Share-based compensation	6,970	6,150
Tax credits	465	3,548
Net operating loss carry-forwards	280	2,247
Deferred lease incentives	0	4,100
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Restructuring Charges	0	639
Deferred Tax Assets, Other	1,451	1,466
Total deferred tax assets	41,996	24,887
Valuation allowance	(1,016)	(3,143)
Net deferred tax assets	40,980	21,744
Deferred tax liabilities:
Intangibles and goodwill	(16,421)	(6,665)
Deferred Tax Liabilities, Leasing Arrangements	(14,675)
Deferred Tax Liabilities, Investments	(5,608)	(5,934)
Deferred Tax Liabilities, Deferred Expense, Capitalized Research and Development Costs	(4,496)	(1,655)
Property and equipment	(4,039)	(3,604)
Prepaid expenses	(2,183)	(1,794)
Other	(483)	(671)
Total deferred tax liabilities	(47,905)	(20,323)
Deferred Tax Liabilities, Net	$ (6,925)
Deferred Tax Assets, Net		$ 1,421

Financing Arrangements (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Summary of Carrying Amounts of Debt

A summary of the carrying amounts of our debt follows:



	As of December 31,
	2019			2018
1.25% convertible senior notes due 2019	$	—		$	242,617
Senior secured credit facility	205,000			50,000
Promissory note due 2024	3,853			4,368
Total long-term debt	$	208,853		$	296,985
Current maturities of long-term debt	(529		)	(243,132		)
Long-term debt, net of current portion	$	208,324		$	53,853

Schedule of Maturities of Long-term Debt

Below is a summary of the scheduled remaining principal payments of our debt as of December 31, 2019.



	Principal Payments of Long-Term Debt
2020	$	529
2021	$	544
2022	$	559
2023	$	575
2024	$	206,646

Schedule of Notes

As of December 31, 2018, the Convertible Notes consisted of the following:



	As of December 31, 2018
Liability component:
Proceeds	$	250,000
Less: debt discount, net of amortization	(6,436		)
Less: debt issuance costs, net of amortization	(947		)
Net carrying amount	$	242,617
Equity component ⁽¹⁾	$	39,287

(1)

Included in additional paid-in capital on the consolidated balance sheet.

Summary of Interest Expense Recognized

The following table presents the amount of interest expense recognized related to the Convertible Notes for the periods presented.



	Year Ended December 31,
	2019		2018		2017
Contractual interest coupon	$	2,344	$	3,125	$	3,125
Amortization of debt discount	6,436		8,232		7,851
Amortization of debt issuance costs	947		1,245		1,224
Total interest expense	$	9,727	$	12,602	$	12,200

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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-Topic 505
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
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Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 505
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+ Details

Acquisitions - Summary of Fair Value of Consideration Transferred (Details) - USD ($) $ in Thousands	Mar. 01, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Contingent consideration related to business acquisitions		$ 0	$ 212	$ 15,489
Innosight Holdings, LLC [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 90,725
Acquisition date fair value	9,560
Contingent consideration related to business acquisitions	12,050
Consideration transferred net working capital adjustment	1,272
Acquisition date fair value of the consideration	$ 113,607

Leases Schedule of Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 9,772	$ 13,701
Lessee, Operating Lease, Liability, Payments, Due Year Two	12,039	12,724
Lessee, Operating Lease, Liability, Payments, Due Year Three	11,502	11,590
Lessee, Operating Lease, Liability, Payments, Due Year Four	11,470	10,766
Lessee, Operating Lease, Liability, Payments, Due Year Five	10,893	10,707
Lessee, Operating Lease, Liability, Payments, Due after Year Five	35,211	27,033
Lessee, Operating Lease, Liability, Payments, Due	90,887	$ 86,521
Lessee Operating Lease Liability Undiscounted Excess	(14,185)
Operating Lease, Liability	$ 76,702

Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

The table below sets forth the changes in the carrying amount of goodwill by reportable segment for the years ended December 31, 2019 and 2018.



	Healthcare			Business Advisory			Education		Total
Balance as of December 31, 2017:
Goodwill	$	636,810		$	302,187		$	102,829	$	1,041,826
Accumulated impairment losses	(208,081		)	(187,995		)	—		(396,076		)
Goodwill, net as of December 31, 2017	$	428,729		$	114,192		$	102,829	$	645,750
Goodwill recorded in connection with a business combination	—			186			—		186
Foreign currency translation	—			(673		)	—		(673		)
Balance as of December 31, 2018:
Goodwill	636,810			301,700			102,829		1,041,339
Accumulated impairment losses	(208,081		)	(187,995		)	—		(396,076		)
Goodwill, net as of December 31, 2018	$	428,729		$	113,705		$	102,829	$	645,263
Goodwill recorded in connection with a business combination ⁽¹⁾	—			—			1,060		1,060
Foreign currency translation	—			357			—		357
Balance as of December 31, 2019:
Goodwill	636,810			302,057			103,889		1,042,756
Accumulated impairment losses	(208,081		)	(187,995		)	—		(396,076		)
Goodwill, net as of December 31, 2019:	$	428,729		$	114,062		$	103,889	$	646,680


(1)	On September 30, 2019, we completed the acquisition of a business in our Education segment. The results of operations of the acquired business is included in our consolidated financial statements and results of operations of our Education segment from the date of acquisition. This acquisition is not significant to our consolidated financial statements.

2019 Annual Goodwill Impairment Test

Pursuant to our policy, we performed our annual goodwill impairment test as of November 30, 2019 on our five reporting units with goodwill balances: Healthcare, Education, Business Advisory, Strategy and Innovation, and Life Sciences. We performed a quantitative impairment test for Strategy and Innovation as the reporting unit is a relatively new business resulting from an acquisition in 2017 and also fell slightly short of internal financial expectations in 2019. We performed qualitative assessments over the Healthcare, Education, Business Advisory, and Life Sciences reporting units to determine if it was more likely than not the respective fair values of these reporting units were less than their carrying amounts, including goodwill.

For the Strategy and Innovation reporting unit, we reviewed goodwill for impairment by comparing the fair value of the reporting unit to its carrying value, including goodwill. In estimating the fair value of the reporting unit, we relied on a combination of the income approach and the market approach utilizing the guideline company method, with a fifty-fifty weighting. Based on the results of the goodwill impairment test, we determined the fair value of Strategy and Innovation reporting unit exceeded its carrying value by 41%. As such, we concluded that there is no indication of goodwill impairment for the reporting unit.

For our qualitative assessment of the Healthcare, Education, Business Advisory and Life Sciences reporting units, we considered the most recent quantitative analysis performed for these reporting units, which was as of November 30, 2017, including the key assumptions used within that analysis, the indicated fair values, and the amount by which those fair values exceeded their carrying amounts. One of the key assumptions used within the prior quantitative analysis was our internal financial projections; therefore, we considered the actual performance of each reporting unit during 2019 and 2018 compared to the internal financial projections used, as well as specific outlooks for each reporting unit based on our most recent internal financial projections. We also considered the market-based valuation multiples used in the market approach within our prior quantitative analysis, which were derived from guideline companies, and noted that the valuation multiples generally increased compared to November 30, 2017. We also reviewed the current carrying value of each reporting unit in comparison to the carrying values as of the prior quantitative analysis. In addition, we considered various factors, including macroeconomic conditions, relevant industry and market trends for each reporting unit, and other entity-specific events, that could indicate a potential change in the fair value of our reporting units or the composition of their carrying values. Based on our assessments, we determined that it was more likely than not that the fair values of the Healthcare, Education, Business Advisory and Life Sciences reporting units exceeded their respective carrying amounts. As such, the goodwill for these reporting units was not considered impaired as of November 30, 2019, and a quantitative goodwill impairment analysis was not necessary.

Further, we evaluated whether any events occurred or any circumstances changed since November 30, 2019 that would indicate goodwill may have become impaired since our annual impairment test. Based on our evaluation as of December 31, 2019, we determined that no indications of impairment arose since our annual goodwill impairment test.

The results of an impairment analysis are as of a point in time. There is no assurance that the actual future earnings or cash flows of our reporting units will be consistent with our projections. We will monitor any changes to our assumptions and will evaluate goodwill as deemed warranted during future periods. Any significant decline in our operations could result in non-cash goodwill impairment charges.

2017 Goodwill Impairment Charges

Healthcare

During the second quarter of 2017, we performed a goodwill impairment analysis for our Healthcare reporting unit as our Healthcare business was experiencing a prolonged period of declining revenues at the time, primarily driven by softness in our revenue cycle offering within our performance improvement solution. This softness was attributable to decreased demand for our services, the winding down of some of our larger projects, and a trend toward smaller projects, as well as fewer large integrated projects. Based on forecasts prepared in the second quarter of 2017 in connection with our quarterly forecasting cycle, we determined that the likely time frame to improve the financial results of this segment would take longer than originally anticipated. As such, we concluded, during the second quarter of 2017, that the fair value of the Healthcare reporting unit may no longer exceed its carrying value. In connection with the preparation of our financial statements for the quarter ended June 30, 2017, we performed an interim impairment test on the Healthcare reporting unit.

Our goodwill impairment test was performed by comparing the fair value of the Healthcare reporting unit to its carrying value and recognizing an impairment charge for the amount by which the carrying value exceeded the fair value. To estimate the fair value of the Healthcare reporting unit, we relied on a combination of the income approach and the market approach, utilizing the guideline company method, with a fifty-fifty weighting. Based on the estimated fair value of the Healthcare reporting unit, we recorded a $208.1 million non-cash pretax goodwill impairment charge in 2017 to reduce the carrying value of goodwill in our Healthcare reporting unit.

Enterprise Solutions and Analytics

Our Enterprise Solutions and Analytics reporting unit was established with the acquisition of Blue Stone International, LLC in 2013. Since that time, we completed five additional business acquisitions within the reporting unit, most recently the acquisitions of the U.S. assets and international assets of ADI Strategies in May 2016 and April 2017, respectively. We record the assets acquired and liabilities assumed in business combinations, including identifiable intangible assets, at their estimated fair values as of the acquisition date, and goodwill is recorded as the excess of the fair value of consideration transferred, including any contingent consideration, over the fair value of the net assets acquired. Therefore, the initial accounting for an acquisition results in its fair value equaling its carrying value. Due to this reporting unit’s relatively low headroom, in the event that the financial performance of the reporting unit did not meet our expectations during 2017, we could be required to take a non-cash impairment charge as a result of any goodwill impairment test. During the first three quarters of 2017,

the performance of Enterprise Solutions and Analytics continued to reasonably meet our expectations. However, both revenues and operating margin during the fourth quarter of 2017 fell short of our expectations resulting in a reduction in workforce within the reporting unit during that quarter. Further, in connection with our annual budget process for 2018, which coincided with our annual goodwill impairment test during the fourth quarter of 2017, we determined that the reporting unit's expected future revenue growth rates and operating margin would be lower than previously anticipated for this reporting unit. As a result, our goodwill impairment test indicated that the fair value of the Enterprise Solutions and Analytics reporting unit no longer exceeded its carrying value.

Our goodwill impairment test was performed by comparing the fair value of the Enterprise Solutions and Analytics reporting unit to its carrying value and recognizing an impairment charge for the amount by which the carrying value exceeded the fair value. To estimate the fair value of the Enterprise Solutions and Analytics reporting unit, we relied on a combination of the income approach and the market approach, utilizing the guideline company method, with a fifty-fifty weighting. Based on the estimated fair value of the Enterprise Solutions and Analytics reporting unit, we recorded a $45.0 million non-cash pretax goodwill impairment charge to reduce the carrying value of this reporting unit's goodwill to zero.

Intangible Assets

Intangible assets as of December 31, 2019 and 2018 consisted of the following:



		As of December 31,
		2019				2018
	Useful Life in Years	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer relationships	3 to 13	$	87,577	$	61,882	$	98,235	$	60,462
Trade names	5 to 6	28,930		25,894		28,930		23,181
Technology and software	3 to 5	5,694		4,321		5,694		2,842
Non-competition agreements	5	2,220		1,447		3,650		2,241
Customer contracts	2	800		52		—		—
Favorable lease contract	3	—		—		720		646
Total		$	125,221	$	93,596	$	137,229	$	89,372

Identifiable intangible assets with finite lives are amortized over their estimated useful lives. Customer relationships and customer contracts, as well as certain trade names and technology and software, are amortized on an accelerated basis to correspond to the cash flows expected to be derived from the assets. All other intangible assets with finite lives are amortized on a straight-line basis.

Intangible assets amortization expense was $17.8 million, $24.0 million, and $35.0 million for the years ended December 31, 2019, 2018, and 2017, respectively. The table below sets forth the estimated annual amortization expense for each of the five succeeding years for the intangible assets recorded as of December 31, 2019.



Year Ending December 31,	Estimated Amortization Expense
2020	$	12,638
2021	$	8,379
2022	$	6,111
2023	$	3,512
2024	$	741

Actual future amortization expense could differ from these estimated amounts as a result of future acquisitions, dispositions, and other factors.

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Reconciliation of Basic and Diluted Earnings Per Share

Earnings (loss) per share under the basic and diluted computations are as follows:



	Year Ended December 31,
	2019			2018			2017
Net income (loss) from continuing operations	$	41,979		$	13,944		$	(170,505	)
Income (loss) from discontinued operations, net of tax	(236		)	(298		)	388
Net income (loss)	$	41,743		$	13,646		$	(170,117	)

Weighted average common shares outstanding—basic	21,993			21,706			21,439
Weighted average common stock equivalents	514			352			—
Weighted average common shares outstanding—diluted	22,507			22,058			21,439

Net earnings (loss) per basic share:
Net income (loss) from continuing operations	$	1.91		$	0.64		$	(7.95	)
Income (loss) from discontinued operations, net of tax	(0.01		)	(0.01		)	0.02
Net income (loss)	$	1.90		$	0.63		$	(7.93	)

Net earnings (loss) per diluted share:
Net income (loss) from continuing operations	$	1.87		$	0.63		$	(7.95	)
Income (loss) from discontinued operations, net of tax	(0.02		)	(0.01		)	0.02
Net income (loss)	$	1.85		$	0.62		$	(7.93	)

Summary of Anti-dilutive Securities Excluded from Computation of Weighted Average Common Stock Equivalents

The number of anti-dilutive securities excluded from the computation of the weighted average common stock equivalents presented above were as follows:



	As of December 31,
	2019	2018	2017
Unvested restricted stock awards	—	—	636
Outstanding common stock options	—	—	194
Convertible senior notes	—	3,129	3,129
Warrants related to the issuance of convertible senior notes	3,129	3,129	3,129
Total anti-dilutive securities	3,129	6,258	7,088

Financing Arrangements - Schedule of Notes (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2014
Convertible Senior Notes [Line Items]
Proceeds			$ 250,000,000
Long-term debt	$ 208,853,000	$ 296,985,000
Convertible Debt [Member]
Convertible Senior Notes [Line Items]
Proceeds		250,000,000	$ 250,000,000
Less: debt discount, net of amortization		(6,436,000)
Debt Issuance Costs, Net		947,000
Long-term debt	0	242,617,000
Equity component	$ 39,287,000	$ 39,287,000

Leases Leases Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee, Lease, Description [Line Items]
Operating Lease, Impairment Loss			$ 800
Lease, Cost			$ 13,223
Operating Leases, Rent Expense, Net				$ 15,100	$ 14,300
Operating Leases, Future Minimum Payments Receivable				$ 10,200
Gain (Loss) on Termination of Lease	$ 800
Lessee, Operating Lease, Description	Among other items, this amendment i) extends the term of the lease from September 30, 2024 to September 30, 2029; ii) provides a renewal option to extend the lease for an additional five year period to September 30, 2034; iii) terminates the lease with respect to certain leased spaces previously vacated; iv) provides abatement of certain future base rent payments and our pro rata share of operating expenses and taxes; and v) provides a one-time cash payment from the lessor as an incentive.
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	1 year		1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	10 years		10 years
Operating lease right-of-use asset [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Impairment Loss			$ 600
Leasehold Improvements [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Impairment Loss		$ 200
Restructuring Charges [Member]
Lessee, Lease, Description [Line Items]
Lease, Cost			400
Gain (Loss) on Termination of Lease	$ 400
Discontinued operations [Member] \| Huron Legal [Member]
Lessee, Lease, Description [Line Items]
Lease, Cost			$ 300

Income Taxes - (Policies)	12 Months Ended
Income Taxes - (Policies)	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	We recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate resolution.

Property and Equipment, Net

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment, Net

Depreciation expense for property and equipment was $13.0 million, $13.4 million, and $13.3 million for the years ended December 31, 2019, 2018, and 2017, respectively. Property and equipment, net at December 31, 2019 and 2018 consisted of the following:



	As of December 31,
	2019			2018
Computers, related equipment, and software	$	50,251		$	53,116
Leasehold improvements	44,323			45,052
Furniture and fixtures	16,273			17,408
Aircraft	7,667			7,541
Assets under construction	250			250
Property and equipment	118,764			123,367
Accumulated depreciation and amortization	(80,351		)	(82,993		)
Property and equipment, net	$	38,413		$	40,374

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income Tax Expense for Continuing Operations

The income tax expense for continuing operations for the years ended December 31, 2019, 2018, and 2017 consists of the following:



	Year Ended December 31,
	2019			2018			2017
Current:
Federal	$	125		$	(1,611	)	$	(635	)
State	2,014			286			545
Foreign	(422		)	1,885			2,040
Total current	1,717			560			1,950
Deferred:
Federal	7,467			9,742			(46,103		)
State	1,610			2,008			(6,576		)
Foreign	(282		)	(1,033		)	(1,270		)
Total deferred	8,795			10,717			(53,949		)
Income tax expense for continuing operations	$	10,512		$	11,277		$	(51,999	)

Components of Income from Continuing Operations Before Income Tax Expense

The components of income from continuing operations before taxes were as follows:



	Year Ended December 31,
	2019			2018		2017
U.S.	$	53,898		$	17,025	$	(221,137	)
Foreign	(1,407		)	8,196		(1,367		)
Total	$	52,491		$	25,221	$	(222,504	)

Reconciliation of Statutory Income Tax Rate to Our Effective Tax Rate for Continuing Operations

A reconciliation of the U.S. statutory income tax rate to our effective tax rate for continuing operations is as follows:



	Year Ended December 31,
	2019		2018		2017
Percent of pretax income from continuing operations:
At U.S. statutory tax rate	21.0	%	21.0	%	35.0	%
State income taxes, net of federal benefit	6.1		7.2		2.7
Disallowed executive compensation	2.0		2.5		—
Meals and entertainment	1.6		2.0		(0.3	)
Tax credits	(3.1	)	(1.4	)	0.2
Valuation allowance	(2.9	)	6.9		(0.2	)
Realized investment (gains) losses	(1.8	)	1.3		0.4
Net tax benefit related to “check-the-box” election	(1.4	)	—		1.2
Stock-based compensation	(1.1	)	4.9		(0.8	)
Foreign source income	(0.5	)	(1.7	)	0.1
Change in fair value of contingent consideration liabilities	—		2.4		—
Global intangible low-taxed income	—		2.1		—
Transition tax on accumulated foreign earnings, net of credits	—		0.8		(0.3	)
U.S. federal rate change	—		(2.3	)	(3.4	)
Goodwill impairment charges	—		—		(10.2	)
Other	0.1		(1.0	)	(1.0	)
Effective income tax rate for continuing operations	20.0	%	44.7	%	23.4	%

Net Deferred Tax Liabilities for Continuing Operations

The net deferred tax liabilities for continuing operations at December 31, 2019 and 2018 consisted of the following:



	As of December 31,
	2019			2018
Deferred tax assets:
Operating lease liabilities	$	20,541		$	—
Accrued payroll and other liabilities	12,289			6,737
Share-based compensation	6,970			6,150
Tax credits	465			3,548
Net operating loss carryforwards	280			2,247
Deferred lease incentives	—			4,100
Restructuring charge liability	—			639
Other	1,451			1,466
Total deferred tax assets	41,996			24,887
Valuation allowance	(1,016		)	(3,143		)
Net deferred tax assets	40,980			21,744
Deferred tax liabilities:
Intangibles and goodwill	(16,421		)	(6,665		)
Operating lease right-of-use assets	(14,675		)	—
Convertible debt investment	(5,608		)	(5,934		)
Software development costs	(4,496		)	(1,655		)
Property and equipment	(4,039		)	(3,604		)
Prepaid expenses	(2,183		)	(1,794		)
Other	(483		)	(671		)
Total deferred tax liabilities	(47,905		)	(20,323		)
Net deferred tax asset (liability) for continuing operations	$	(6,925	)	$	1,421

Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits

A reconciliation of our beginning and ending amount of unrecognized tax benefits is as follows:



	Unrecognized Tax Benefits
Balance at January 1, 2017	$	3,340
Decrease due to lapse of statute of limitations	(2,410		)
Decrease based on tax positions related to prior years	(117		)
Balance at December 31, 2017	813
Additions based on tax positions related to prior years	115
Decrease due to lapse of statute of limitations	(28		)
Balance at December 31, 2018	900
Decrease due to settlements of prior year tax positions	(115		)
Decrease due to lapse of statute of limitations	(735		)
Balance at December 31, 2019	$	50

Equity Incentive Plans - Schedule of Performance-Based Stock Activity (Detail) - Performance-based stock activity [Member] - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Number of Shares
Nonvested stock, number of shares, beginning balance	500,000	436,000
Granted, number of shares		281,000
Vested, number of shares		(73,000)
Forfeited, number of shares		(144,000)
Nonvested stock, number of shares, ending balance		500,000	436,000
Weighted Average Grant Date Fair Value (in dollars)
Nonvested stock, weighted average grant date fair value, beginning balance (in USD per share)	$ 42.72	$ 36.81
Weighted average grant date fair value (in USD per share)		47.93	$ 35.25	$ 42.75
Vested, weighted average grant date fair value (in USD per share)		40.69
Forfeited, weighted average grant date fair value (in USD per share)		36.06
Nonvested stock, weighted average grant date fair value, ending balance (in USD per share)		$ 42.72	$ 36.81
Forecast [Member]
Number of Shares
Forfeited, number of shares	(110,936)

Earnings Per Share - Reconciliation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share Reconciliation [Abstract]
Net income from continuing operations	$ 14,354	$ 13,706	$ 10,569	$ 3,350	$ 3,055	$ 8,249	$ 5,862	$ (3,222)	$ 41,979	$ 13,944	$ (170,505)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(41)	(52)	(97)	(46)	6	228	(490)	(42)	(236)	(298)	388
Net income	$ 14,313	$ 13,654	$ 10,472	$ 3,304	$ 3,061	$ 8,477	$ 5,372	$ (3,264)	$ 41,743	$ 13,646	$ (170,117)
Weighted average common shares outstanding-basic	22,051	22,052	21,997	21,868	21,774	21,745	21,709	21,592	21,993	21,706	21,439
Weighted average common stock equivalents									514	352	0
Weighted average common shares outstanding- diluted	22,676	22,561	22,400	22,311	22,294	22,110	21,918	21,592	22,507	22,058	21,439
Net earnings per basic share:
Net income from continuing operations, per basic share (in USD per share)	$ 0.65	$ 0.62	$ 0.48	$ 0.15	$ 0.14	$ 0.38	$ 0.27	$ (0.15)	$ 1.91	$ 0.64	$ (7.95)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0	0	0	0	0	0.01	(0.02)	0	(0.01)	(0.01)	0.02
Net income, per basic share (in USD per share)	0.65	0.62	0.48	0.15	0.14	0.39	0.25	(0.15)	1.90	0.63	(7.93)
Net earnings per diluted share:
Net income from continuing operations, per diluted share (in USD per share)	0.63	0.61	0.47	0.15	0.14	0.37	0.27	(0.15)	1.87	0.63	(7.95)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	0	0	0	0	0	0.01	(0.02)	0	(0.02)	(0.01)	0.02
Net income, per diluted share (in USD per share)	$ 0.63	$ 0.61	$ 0.47	$ 0.15	$ 0.14	$ 0.38	$ 0.25	$ (0.15)	$ 1.85	$ 0.62	$ (7.93)

Employee Benefit and Deferred Compensation Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Postemployment Benefits [Abstract]
Employer contributions up to percent of employee's salaries	6.00%
Employer matching contributions	$ 22.8	$ 20.8	$ 20.0
Deferred compensation liability	$ 27.5	$ 18.4

Capital Structure - Additional Information (Detail) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Equity [Abstract]
Preferred stock, shares authorized	50,000,000
Common stock, shares authorized	500,000,000	500,000,000
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Issued	0	0