Document and Entity Information [Abstract] Document and entity information. Statement, Equity Components [Axis] Equity Component [Domain] Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Receivables from clients, net Accounts Receivable, Net, Current Unbilled Services Net Current Unbilled services, net Revenues recognized in excess of billings, which are expected to be collected within one year of the balance sheet date, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Income tax receivable Income Taxes Receivable, Current Deferred income taxes, net Deferred Tax Assets, Net, Current Prepaid Expenses And Other Current Assets Prepaid expenses and other current assets Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer. Also includes the aggregate carrying amount, as of the balance sheet date, of current assets not separately presented elsewhere in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Current assets of discontinued operations Total current assets Assets of Disposal Group, Including Discontinued Operation, Current Total current assets Assets, Current, Total Property and equipment, net Property, Plant and Equipment, Net Other non-current assets Other Assets, Noncurrent Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Goodwill Carrying amount of goodwill Goodwill, net as of December 31, 2011 Goodwill, net as of September 30, 2012 Goodwill Total assets Assets, Total Liabilities and stockholders' equity Liabilities and Stockholders' Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued expenses Accrued Liabilities, Current Accrued payroll and related benefits Employee-related Liabilities, Current Income tax payable Accrued Income Taxes, Current Deferred revenues Deferred Revenue, Current Current liabilities of discontinued operations Total current liabilities Liabilities of Disposal Group, Including Discontinued Operation, Current Total current liabilities Liabilities, Current, Total Non-current liabilities: Liabilities, Noncurrent [Abstract] Bank borrowings Long-term Debt, Excluding Current Maturities Deferred lease incentives Deferred Rent Credit, Noncurrent Total non-current liabilities Liabilities, Noncurrent, Total Stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Common stock; $0.01 par value; 500,000,000 shares authorized; 24,771,866 and 24,208,549 shares issued at September 30, 2012 and December 31, 2011, respectively Common Stock, Value, Issued Common stock, shares issued Common Stock, Shares, Issued Common stock, shares authorized Common Stock, Shares Authorized Common stock, par value Common Stock, Par or Stated Value Per Share Treasury stock, at cost, 1,817,546 and 1,642,018 shares at September 30, 2012 and December 31, 2011, respectively Treasury Stock, Value Treasury stock, shares Treasury Stock, Shares Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders' equity Beginning Balance Ending Balance Stockholders' Equity Attributable to Parent, Total Total liabilities and stockholders' equity Liabilities and Stockholders' Equity, Total Revenues and reimbursable expenses: Revenues [Abstract] Revenues Sales Revenue, Services, Net Reimbursable expenses Reimbursement Revenue Total revenues and reimbursable expenses Total revenues and reimbursable expenses Revenues, Total Direct Costs And Reimbursable Expenses Exclusive Of Depreciation And Amortization Shown In Operating Expenses [Abstract] Direct costs and reimbursable expenses (exclusive of depreciation and amortization shown in operating expenses): Direct costs and reimbursable expenses (exclusive of depreciation and amortization shown in operating expenses). Direct costs Cost of Services Intangible assets amortization Cost of Services, Amortization Reimbursable expenses Cost of Reimbursable Expense Total direct costs and reimbursable expenses Cost of Revenue, Total Operating expenses: Operating Expenses [Abstract] Selling, general and administrative Selling, General and Administrative Expense Restructuring Charges Restructuring charges Restatement Related Expenses Restatement related expenses Amounts charged against earnings in the period for expenses incurred related to the financial statement restatement. Depreciation and amortization Depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Total operating expenses Operating Expenses, Total Operating income Operating income Operating Income (Loss) Other income (expense): Nonoperating Income (Expense) [Abstract] Interest Expense, Net of Interest Income Interest expense, net of interest income The cost of borrowed funds accounted for as interest that was charged against earnings during the period, net of immaterial amounts of interest income recognized during the period associated with banking, investing or other activities. Other income (expense) Other Nonoperating Income (Expense) Total other expense Other expense, net Nonoperating Income (Expense), Total Income from continuing operations before income tax expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net income from continuing operations Net income from continuing operations Income (Loss) from Continuing Operations Attributable to Parent Net income (loss) from discontinued operations Income (loss) from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Net income Net income Net Income (Loss) Attributable to Parent Net earnings per basic share: Earnings Per Share, Basic [Abstract] Income (Loss) from Continuing Operations, Per Basic Share Income from continuing operations Net income from continuing operations Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share Income (loss) from discontinued operations, net of tax Net income Net income Earnings Per Share, Basic Net earnings per diluted share: Earnings Per Share, Diluted [Abstract] Income (Loss) from Continuing Operations, Per Diluted Share Income from continuing operations Net income from continuing operations Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share Income (loss) from discontinued operations, net of tax Net income Net income Earnings Per Share, Diluted Weighted average shares used in calculating earnings per share: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic Weighted average common shares outstanding - basic Weighted Average Number of Shares Outstanding, Basic Diluted Weighted average common shares outstanding - diluted Weighted Average Number of Shares Outstanding, Diluted Common Stock Common Stock [Member] Beginning Balance, shares Ending Balance, shares Shares, Issued Treasury Stock Treasury Stock [Member] Additional Paid-In Capital Additional Paid-In Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss [Member] Comprehensive Income: Components of comprehensive income Comprehensive Income, Net of Tax, Attributable to Parent [Abstract] Comprehensive income Comprehensive income Comprehensive Income, Net of Tax, Attributable to Parent, Total Issuance of Common Stock in Connection with [Abstract] Issuance of common stock in connection with: Issuance of common stock in connection with. Restricted stock awards, net of cancellations, shares Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted stock awards, net of cancellations Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Exercise of stock options, shares Stock Issued During Period, Shares, Stock Options Exercised Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Share-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Value Income tax benefit on share-based compensation Adjustments to Additional Paid in Capital, Tax Effect from Share-based Compensation Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Share-based compensation Share-based Compensation Allowances for Doubtful Accounts and Unbilled Services Allowances for doubtful accounts and unbilled services Amount of the current period expense and reduction of revenue charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables and unbilled services, to an amount that approximates their net realizable value (the amount expected to be collected). Deferred income taxes Deferred Income Tax Expense (Benefit) Changes in operating assets and liabilities, net of businesses acquired: Increase (Decrease) in Operating Capital [Abstract] Decrease (increase) in receivables from clients Increase (Decrease) in Accounts Receivable Increase in unbilled services Increase (Decrease) in Unbilled Receivables Increase Decrease in Current Income Tax Receivable Payable Net Decrease in current income tax receivable, net The net change during the period in the amount of cash payments due to or due from taxing authorities for taxes that are based on the reporting entity's earnings. Decrease in other assets Increase (Decrease) in Other Operating Assets Decrease in accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities (Decrease) increase in accrued payroll and related benefits Increase (Decrease) in Employee Related Liabilities (Decrease) increase in deferred revenues Increase (Decrease) in Deferred Revenue Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of property and equipment, net Payments to Acquire Property, Plant, and Equipment Net investment in life insurance policies Payments for (Proceeds from) Life Insurance Policies Purchases of businesses Payments to Acquire Businesses, Net of Cash Acquired Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Tax benefit from share-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Proceeds from borrowings under credit facility Proceeds from Long-term Lines of Credit Repayments on credit facility Repayments of Long-term Debt Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash Effect of Exchange Rate on Cash and Cash Equivalents Net decrease in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Description of Business Nature Of Operations [Text Block] Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Earnings Per Share Earnings Per Share [Text Block] Earnings Per Share [Abstract] Borrowings Debt Disclosure [Text Block] Derivative Instrument and Hedging Activity Derivative Instruments and Hedging Activities Disclosure [Text Block] Comprehensive Income Comprehensive Income Note [Text Block] Segment Information Segment Reporting Disclosure [Text Block] Amendment Flag Current Fiscal Year End Date Document Period End Date Document Type Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Filer Category Entity Registrant Name Document Fiscal Period Focus Document Fiscal Year Focus Consolidated Balance Sheets [Abstract] Consolidated Statements of Cash Flows [Abstract] Consolidated Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Line Items] Cash and cash equivalents classified as discontinued operations Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents Restructuring Charges Restructuring and Related Activities Disclosure [Text Block] Accrued Consideration for Business Acquisitions Current Accrued consideration for business acquisitions, current portion The accrual for payments to acquire businesses including earn-out payments, which represents additional purchase price earned by selling shareholders subsequent to the business combination as certain financial performance targets and conditions are met, and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date. Loss on disposal of property and equipment Gain (Loss) on Sale of Property Plant Equipment Non Cash Portion of Litigation Settlement Non-cash portion of litigation settlement Represents the non-cash portion of the amount of expense (income) recognized in the period to settle pending or threatened litigation and insurance claims. Income Taxes Income Tax Disclosure [Text Block] Income Taxes [Abstract] Shares redeemed for employee tax withholdings Payments Related to Tax Withholding for Share-based Compensation Cash and cash equivalents at beginning of the period Cash and cash equivalents at end of the period Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations Commitments, Contingencies and Guarantees Commitments Contingencies and Guarantees [Text Block] Goodwill and Intangible Assets [Abstract] Description of Business/Basis of Presentation/New Accounting Pronouncements [Abstract] Comprehensive Income [Abstract] Discontinued Operations [Abstract] Borrowings [Abstract] Restructuring Charges [Abstract] Derivative Instrument and Hedging Activity [Abstract] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Fair Value of Financial Instruments [Abstract] Commitments, Contingencies and Guarantees [Abstract] Segment Information [Abstract] Shares Redeemed for Employee Tax Withholdings Shares withheld for employee tax withholdings Shares redeemed for employee tax withholdings. Deferred Compensation and Other Liabilities Deferred compensation and other liabilities Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). Also includes the aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet due to materiality considerations. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Gain (Loss) Related to Litigation Settlement Litigation settlements, net Shares Redeemed for Employee tax Withholdings Shares Shares withheld for employee tax withholdings, shares Shares Redeemed for Employee tax withholdings, shares. Principal Payments of Notes Payable and Capital Lease Obligations Payments of capital lease obligations Principal payments of notes payable and capital lease obligations. Non-current liabilities of discontinued operations Other non-current liabilities Liabilities of Disposal Group, Including Discontinued Operation, Noncurrent Deferred income taxes Deferred Tax Liabilities, Noncurrent Commitments and Contingencies Commitments and Contingencies Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Basis of Presentation Basis of Accounting [Text Block] Foreign currency translation (loss) gain, net of tax Foreign currency translation (loss) gain, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Unrealized (loss) gain on cash flow hedging instruments, net of tax Unrealized (loss) gain on cash flow hedging instruments, net of tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Derivatives and Hedging Derivatives, Policy [Policy Text Block] Fair Value Measurements and Disclosures Fair Value Measurement, Policy [Policy Text Block] Segment Reporting Segment Reporting, Policy [Policy Text Block] Summarized operating results of discontinued operations Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block] Income (loss) from discontinued operations before income tax expense (1) Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Summarized operating results of discontinued operations Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] Revenues Disposal Group, Including Discontinued Operation, Revenue Changes in the carrying amount of goodwill Schedule of Goodwill [Table Text Block] Intangible assets Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Goodwill recorded in connection with business combinations Goodwill related to acquisitions Goodwill, Acquired During Period Goodwill, Impairment Loss Goodwill impairment charge Foreign currency translation Goodwill, Translation Adjustments Health and Education Consulting [Member] Health and Education Consulting [Member] Health and education consulting. Financial Consulting [Member] Financial Consulting [Member] Financial consulting. Customer relationships [Member] Customer Relationships [Member] Technology And Software [Member] Technology and software [Member] Technology and software. Non-competition agreements [Member] Non-competition Agreements [Member] Trade names [Member] Trade Names [Member] Intangible assets Finite-Lived Intangible Assets, Net [Abstract] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Goodwill and Intangible Assets (Textual) [Abstract] Goodwill and intangible assets (Textual) [Abstract] Goodwill and intangible assets. Intangible assets amortization expense Amortization of Intangible Assets Estimated annual intangible assets amortization expense 2012 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Estimated annual intangible assets amortization expense 2013 Finite-Lived Intangible Assets, Amortization Expense, Year Two Estimated annual intangible assets amortization expense 2014 Finite-Lived Intangible Assets, Amortization Expense, Year Three Estimated annual intangible assets amortization expense 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Four Estimated annual intangible assets amortization expense 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Five Estimated annual intangible assets amortization expense 2017 Finite-Lived Intangible Assets, Amortization Expense, after Year Five Schedule of Goodwill [Table] Business Segments [Axis] Segment [Domain] Goodwill [Line Items] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Acquired Finite-Lived Intangible Assets [Line Items] Reconciliation of Basic and Diluted Earnings (Loss) Per Share Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block] Earnings Per Share (Textual) [Abstract] Earnings Per Share (Textual) [Abstract] Earnings per share. Unused borrowing capacity under Credit Agreement Line of Credit Facility, Remaining Borrowing Capacity Borrowings outstanding under credit facility Line of Credit Facility, Fair Value of Amount Outstanding Percentage of weighted average interest rate of borrowings Debt, Weighted Average Interest Rate Credit Agreement Dividends Restriction Amount Credit Agreement, dividends restriction amount Credit Agreement, dividends restriction amount. Period Of Revolving Credit Facility Period of revolving credit facility Period of revolving credit facility. Period Of Term Loan Facility Period of term loan facility Period of term loan facility. Restructuring Charges (Textual) [Abstract] Restructuring Charges (Textual) [Abstract] Restructuring charges. Net unrealized losses on cash flow hedges, net of tax, beginning of period Net unrealized losses on cash flow hedges, net of tax, end of period Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax Derivative Instrument and Hedging Activity (Textual) [Abstract] Derivative Instrument and Hedging Activity (Textual) [Abstract] Derivative instrument and hedging activity. Interest rate swap agreement for a notional amount Notional Amount of Interest Rate Derivatives Duration of Libor Duration of LIBOR Duration of LIBOR. Anticipated net gains or losses in Accumulated Other Comprehensive Income to be reclassified to earnings Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred Financial assets and liabilities measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Asset: Assets, Fair Value Disclosure [Abstract] Liability: Liabilities, Fair Value Disclosure [Abstract] Asset, fair value Assets, Fair Value Disclosure Liabilities, fair value Liabilities, Fair Value Disclosure Promissory Note [Member] Promissory note [Member] Promissory note. Interest rate swap [Member] Interest Rate Swap [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) [Member] Fair Value, Inputs, Level 2 [Member] Significant Unobservable Inputs (Level 3) [Member] Fair Value, Inputs, Level 3 [Member] Fair Value of Financial Instruments (Textual) [Abstract] Fair Value of Financial Instruments (Textual) [Abstract] Fair value of financial instruments. Components of comprehensive income Schedule of Comprehensive Income (Loss) [Table Text Block] Other comprehensive (loss) income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Income Taxes (Textual) [Abstract] Income Taxes (Textual) [Abstract] Income taxes. Effective tax rate Effective Income Tax Rate, Continuing Operations Commitments Contingencies and Guarantees (Textual) [Abstract] Commitments, Contingencies and Guarantees (Textual) [Abstract] Commitments, contingencies and guarantees. Civil penalties as Per Violation Under Party One Maximum amount of civil penalties per violation under the federal False Claims Act Maximum amount of civil penalties per violation under the federal false claims act. Civil penalties as Per Violation Under Party Two Maximum amount of civil penalties per violation under the state False Claims Act Maximum amount of civil penalties per violation under the state false claims act. Additional Purchase Consideration Remain Payable Obligation Additional purchase consideration, remain payable. Components of segment information Schedule of Segment Reporting Information, by Segment [Table Text Block] Legal Consulting [Member] Legal Consulting [Member] Legal consulting. Segment Operating Income as Percent of Segment Revenues Segment operating income as a percent of segment revenues Segment operating income as percent of segment revenues. Statements of Earnings Reconciliation [Abstract] Statements of Earnings reconciliation: Statements of earnings reconciliation. Segment Operating Income Segment operating income Segment operating income. Charges Not Allocated at Segment Level [Abstract] Charges not allocated at the segment level: Charges not allocated at segment level. Segment Information (Textual) [Abstract] Segment Information (Textual) [Abstract] Segment information. Schedule Of Segment Reporting Information By Segment [Table] Segment Reporting Information [Line Items] Components of Segment Information Segment Reporting Information Profit Loss [Abstract] Other selling, general and administrative expenses Other Selling General And Administrative Expense Presentation of Financial Statements Basis of Accounting, Policy [Policy Text Block] Fair Value interest rate swaps designated as cash flow hedging instruments Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Interest rate swaps designated as cash flow hedging instruments Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Other current assets Disposal Group, Including Discontinued Operation, Other Current Assets Disposal Group Including Discontinued Operation Accrued Payroll And Related Liabilities Accrued payroll and related benefits Disposal group including discontinued operation accrued payroll and related liabilities. Disposal Group Including Discontinued Operation Accounts Payable Accrued Expenses And Other Liabilities Accounts payable, accrued expenses and other liabilities Disposal group including discontinued operation accounts payable accrued expenses and other liabilities. Gain (Loss) on sale of Accounting Advisory and Disputes and investigations Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Accounting Advisory [Member] Accounting Advisory [Member] Accounting advisory. Disputes And Investigation [Member] Disputes and Investigation [Member] Disputes and investigation. Goodwill Goodwill, Gross Weighted average common stock equivalents Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average common stock equivalents antidilutive Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Groups, Including Discontinued Operations, Name [Domain] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Schedule Of Disposal Groups Including Discontinued Operations Balance Sheet And Additional Disclosures [Table Text Block] Carrying value of assets and liabilities aggregated in discontinued operations Schedule of disposal groups including discontinued operations balance sheet and additional. Aggregate principal amount Line of Credit Facility, Maximum Borrowing Capacity Increase the aggregate amount of revolving credit facility Line of Credit Facility, Increase, Additional Borrowings Percentage Of Pledged Voting Stock In Domestic Subsidiaries Percentage of pledged voting stock in domestic subsidiaries Percentage of pledged voting stock in domestic subsidiaries. Percentage Of Pledged Voting Stock In Foreign Subsidiaries Percentage of pledged voting stock in foreign subsidiaries Percentage of pledged voting stock in foreign subsidiaries. Line Of Credit Basis Of Spread On Federal Fund Rate Percentage of Federal Funds Rate Line of credit basis of spread on federal fund rate. Line Of Credit Basis Of Spread On Eurodollar Rate Percentage of Eurodollar Rate Line of credit basis of spread on Eurodollar rate. Line Of Credit Facility Periodic Payment Principal Percentage Year One Percentage of original principal balance in year one Line of credit facility periodic payment principal percentage year one. Line Of Credit Facility Periodic Payment Principal Percentage Year Two Percentage of original principal balance in year two Line of credit facility periodic payment principal percentage year two. Line Of Credit Facility Periodic Payment Principal Percentage Year Three Percentage of original principal balance in year three Line of credit facility periodic payment principal percentage year three. Line Of Credit Facility Periodic Payment Principal Percentage Year Four Percentage of original principal balance in year four Line of credit facility periodic payment principal percentage year four. Line Of Credit Facility Periodic Payment Principal Percentage Year Five Percentage of original principal balance in year five Line of credit facility periodic payment principal percentage year five. Maturity date Line of Credit Facility, Expiration Date Percentage Of Cumulative Consolidated Net Income For Calculation Of Restriction On Dividends Percentage of cumulative consolidated net income Percentage of cumulative consolidated net income for calculation of restriction on dividends. Percentage Of Net Cash Proceeds From Equity Issuances For Calculation Of Restriction On Dividends Percentage of net cash proceeds from equity issuances Percentage of net cash proceeds from equity issuances for calculation of restriction on dividends. Minimum Fixed Charge Coverage Ratio Minimum fixed charge coverage ratio Minimum fixed charge coverage ratio. Maximum Leverage Ratio Maximum leverage ratio Maximum leverage ratio. Minimum Net Worth Amount Minimum net worth amount Minimum net worth amount. Outstanding letters of credit Letters of Credit Outstanding, Amount Restructuring charge liability Restructuring Reserve Deferred Compensation and Other Liabilities [Member] Deferred compensation and other liabilities [Member] Deferred compensation and other liabilities. Fair Value (Derivative Liability) Interest Rate Cash Flow Hedge Derivative at Fair Value, Net Fair Value interest rate swaps designated as cash flow hedging instruments Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract] Interest rate swaps designated as cash flow hedging instruments Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent [Abstract] Change in fair value, net of tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Reclassification adjustments into earnings, net of tax Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax Variable Rate Borrowings Outstanding Variable-rate borrowings outstanding Variable-rate borrowings outstanding. Interest Rate Swap Fixed Interest Rate Percentage of fixed rate Interest rate swap fixed interest rate. Financial assets and liabilities measured at fair value on a recurring basis Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Domain] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Term Loan Facility [Member] Secured Debt [Member] Line of Credit Facility [Line Items] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Accrued expenses [Member] Accrued Liabilities [Member] Derivatives, Fair Value [Line Items] Non Cash Consideration For Sale Of Discontinued Operation Promissory note received for sale of AA Non cash consideration for sale of discontinued operation. Installment Of Promissory Note Consideration received as promissory note payable, 2013 Installment of promissory note. Non Cash Consideration Final Payment For Sale Of Discontinued Operation Consideration received as promissory note payable, 2015 Non cash consideration final payment for sale of discontinued operation. Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Tax Foreign currency translation adjustment, tax (expense) benefit Other comprehensive income loss foreign currency transaction and translation adjustment tax. Foreign currency translation adjustment, before taxes Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Unrealized gain (loss) on cash flow hedging instrument, before taxes Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax, Portion Attributable to Parent Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent Unrealized gain (loss) on cash flow hedging instrument, tax (expenses) benefit Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Other comprehensive (loss) income, before taxes Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Other comprehensive (loss) income, tax (expense) benefit Number of operating segments Number of Operating Segments Healthcare Valuation Consulting Practice Revenue Financial Consulting segment revenues related to health care valuation consulting practice Healthcare valuation consulting practice revenue. Promissory Note Payable Period Promissory note payable period Promissory note payable period. Guarantees in the form of letters of credit Guaranty Liabilities Additional Contingent Purchase Consideration Recognized During Period Additional purchase consideration Additional contingent purchase consideration recognized during period. Carrying value of assets and liabilities aggregated in discontinued operations Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] Discontinued Operations (Textual) [Abstract] Discontinued Operations (Textual) [Abstract] Discontinued Operations. Borrowings (Textual) [Abstract] Borrowings (Textual) [Abstract] Borrowings. Consolidated Statements of Earnings and Other Comprehensive Income [Abstract] Payments Under Medicare and Medicaid Programs in Violation Alleged amount of outlier payments received Alleged amount of outlier payments received. Receivables from clients, net Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Assets Assets of Disposal Group, Including Discontinued Operation, Current [Abstract] Total assets Assets of Disposal Group, Including Discontinued Operation Liabilities Liabilities of Disposal Group, Including Discontinued Operation [Abstract] Total liabilities Liabilities of Disposal Group, Including Discontinued Operation Changes in the carrying amount of goodwill Goodwill [Roll Forward] Goodwill reallocation Reallocation of goodwill Goodwill, Other Changes Reconciliation of Basic and Diluted Earnings (Loss) Per Share Earnings Per Share Reconciliation [Abstract] Policy Text Block [Abstract] Contingencies Commitments and Contingencies, Policy [Policy Text Block] New Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Supplemental Disclosure of Cash Flow Information Supplemental disclosure of cash flow information: Supplemental disclosure of cash flow information. Non Cash Financing Activities Non-cash financing activities Non cash financing activities. Issuance Of Common Stock In Connection With Settlement Of Class Action Lawsuit Issuance of common stock in connection with settlement of class action lawsuit Issuance of common stock in connection with settlement of class action lawsuit. Minimum Percentage of Combined Receivables and Unbilled Services Balances for Single Client Percentage of combined receivables and unbilled services balances Minimum percentage of combined receivables and unbilled services balances for single client. Borrowings (Additional Textual) [Abstract] Borrowings (Additional Textual) [Abstract] Borrowings Accumulated impairment Goodwill, Impaired, Accumulated Impairment Loss Discount rate used to value promissory note Fair Value Inputs, Discount Rate Single customer revenues as a percentage of consolidated revenue Entity-Wide Revenue, Major Customer, Percentage Document Reviewer Database [Member] Document reviewer database [Member] Document reviewer database. Restructuring Reserve Accelerated Depreciation On Leasehold Restructuring reserve accelerated depreciation on leasehold Remaining accelerated depreciation charge on leasehold improvements. Purchase price of the two acquisitions Business Acquisition, Cost of Acquired Entity, Purchase Price Goodwill and Intangible Assets (Additional Textual) [Abstract] Goodwill and Intangible Assets (Additional Textual) [ Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition [Line Items] Accrued Consideration for Business Acquisitions Noncurrent Accrued consideration for business acquisitions, net of current portion Accrued consideration for business acquisitions noncurrent. All States and Provinces [Axis] All states and provinces. Consolidation of Office Space [Member] Consolidation of Office Space [Member] Consolidation of office space. Office Relocation [Member] Office Relocation [Member] Office relocation. Leasehold Improvements [Member] Leasehold Improvements [Member] Washington D.C [Member] WASHINGTON NEW YORK New York [Member] Lease payments, net of estimated sublease income charges Operating Leases, Rent Expense, Net Restructuring reserve accelerated depreciation Restructuring Reserve, Accelerated Depreciation Amount of Brokerage Fees Related to Sub Lease Arrangement Accelerated depreciation charge for brokerage fees Amount of brokerage fees related to sub lease arrangement. Schedule of Restructuring and Related Costs [Table] All States and Provinces [Domain] Restructuring Type [Axis] Type of Restructuring [Domain] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Restructuring Cost and Reserve [Line Items] Additional Relocation Charges Additional charges in relocation of office space Additional relocation charges. Restructuring Charges (Additional Textual) [Abstract] Restructuring Charges (Additional Textual) [Abstract] Restructuring charges. Settlement charges recorded during period Legal Fees Goodwill Impairment Loss Continuing and Discontinued Operations Goodwill impairment charge Impairment charge Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment. Includes amounts allocated to continuing and discontinued operations. Deferred payments related to business acquisitions Other Significant Noncash Transaction, Value of Consideration Given Business Combinations Business Combinations Policy [Policy Text Block] Intangible assets related to acquisitions Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill Business Acquisition, Purchase Price Allocation, Goodwill Amount Goodwill related to acquisitions Health and Education Consulting and Financial Consulting [Member] Health and education consulting and financial consulting. Health and Education Consulting and Financial Consulting [Member] Fixed Charge Coverage Ratio Actual fixed charge coverage ratio Fixed charge coverage ratio. Leverage Ratio Leverage ratio. Actual leverage ratio