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Payment Arrangement Change in Contract with Customer, Asset [Abstract] Change in Contract with Customer, Asset [Abstract] Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Deferred income taxes, net Deferred Income Tax Assets, Net Commitments, Contingencies and Guarantees Commitments Contingencies and Guarantees [Text Block] Retained Earnings Retained Earnings [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Total liabilities and stockholders’ equity Liabilities and Equity Other income (expense), net: Nonoperating Income (Expense) [Abstract] Other non-current assets Other Assets, Noncurrent Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Unrealized gain on cash flow hedging instruments, net of tax Net unrealized gain (loss) on interest rate swaps Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Net income per basic share (in dollars per share) Net income (USD per share) Earnings Per Share, Basic Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Q4 2021 Life Science Divestiture Q4 2021 Life Science Divestiture [Member] Q4 2021 Life Science Divestiture Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Accounting Policies [Abstract] Accounting Policies [Abstract] Restructuring Reserve, Accrual Adjustment Restructuring Reserve, Accrual Adjustment Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Receivables from major customers (as a percent) Receivables from Major Customer Percentage The percentage of combined consolidated receivables from clients, net and unbilled services, net generated by a single customer above the 10% concentration risk percentage. Arrangement Duration Trading Arrangement Duration Proceeds from Sale and Collection of Notes Receivable Proceeds from Sale and Collection of Notes Receivable Entity Address, City or Town Entity Address, City or Town Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Components of Segment Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Total non-current liabilities Liabilities, Noncurrent Restructuring charges Total operating expenses Restructuring Charges Document Transition Report Document Transition Report Award Timing Predetermined Award Timing Predetermined [Flag] Settlement of repurchase of shares (in shares) StockPurchaseInitiatedbutnotyetSettledShares StockPurchaseInitiatedbutnotyetSettledShares Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Technology and software Technology-Based Intangible Assets [Member] Termination Date Trading Arrangement Termination Date Common stock, shares authorized (shares) Common Stock, Shares Authorized Reclassification adjustments into earnings Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Performance Obligation Satisfied in Prior Period [Domain] Performance Obligation Satisfied in Prior Period [Domain] [Domain] for Performance Obligation Satisfied in Prior Period [Axis] Derivative Instrument [Axis] Derivative Instrument [Axis] Shorelight Holdings LLC Shorelight Holdings Llc [Member] Shorelight Holdings Llc [Member] Underlying Asset Class [Domain] Underlying Asset Class [Domain] Net unrealized gain (loss) on interest rate swaps Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax Adjustments to reconcile net income to cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Liability Class [Axis] Liability Class [Axis] All Trading Arrangements All Trading Arrangements [Member] Measurement Input Type [Axis] Measurement Input Type [Axis] Interest rate cash flow hedge gain (loss) to be reclassified Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net All Adjustments to Compensation All Adjustments to Compensation [Member] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Award Timing Disclosures [Line Items] Commercial: Commercial [Member] Commercial Compensation Amount Outstanding Recovery Compensation Amount Allowances for doubtful accounts Accounts Receivable, Credit Loss Expense (Reversal) Convertible debt investment Convertible Debt Securities Convertible Debt Securities [Member] Proceeds from exercises of stock options Proceeds from Stock Options Exercised Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] 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] (Increase) decrease in unbilled services, net Increase (Decrease) in Other Receivables Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Three Interest rate swap agreement, end date Derivative, Contract End Date Insider Trading Arrangements [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Related Party [Axis] Related Party, Type [Axis] Divestiture of business Proceeds from Divestiture of Businesses, Net of Cash Divested Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Entity Registrant Name Entity Registrant Name Debra L. Zumwalt [Member] Debra L. Zumwalt Award Timing Method Award Timing Method [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] (Increase) decrease in other assets Increase (Decrease) in Other Operating Assets Restructuring Charges [Abstract] Restructuring Charges [Abstract] 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Two Adjustment to Compensation, Amount Adjustment to Compensation Amount Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Change in fair value of contingent consideration liabilities Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Employee Severance [Member] Employee Severance [Member] Payments for Restructuring Payments for Restructuring Document Period End Date Document Period End Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Adoption Date Trading Arrangement Adoption Date Restricted stock awards, net of cancellations Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Actual consolidated leverage ratio Debt Instrument, Covenant, Actual Consolidated Leverage Ratio Debt Instrument, Covenant, Actual Consolidated Leverage Ratio Financial Assets and Liabilities Measured at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Repayments of bank borrowings Repayments of Long-Term Debt Treasury Stock, Common Treasury Stock, Common [Member] Entity Central Index Key Entity Central Index Key Amortization of debt discount and issuance costs Amortization of Debt Issuance Costs and Discounts Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Liabilities: Liabilities, Fair Value Disclosure [Abstract] Payment to Acquire Life Insurance Policy, Investing Activities Payment to Acquire Life Insurance Policy, Investing Activities Gain on sale of property, plant and equipment Gain (Loss) on Disposition of Property Plant Equipment Non-cash lease expense Noncash Operating Lease Expense Portion of straight-line operating lease expense allocated to the amortization of the operating lease right of use assets. Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Income tax expense Income Tax Expense (Benefit) Accrued payroll and related benefits Employee-related Liabilities, Current Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Number of operating segments Number of Operating Segments Other Restructuring [Member] Other Restructuring [Member] Name Trading Arrangement, Individual Name Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Equity [Abstract] Equity [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Amendment Flag Amendment Flag Intangible assets Finite-Lived Intangible Assets, Net [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Purchases of businesses Payments to Acquire Businesses, Net of Cash Acquired Shares redeemed for employee tax withholdings (shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Fair Value, Asset/Liability Assets, Fair Value Disclosure [Abstract] Stock repurchased and retired (shares) Stock repurchased and retired (shares) Stock Repurchased and Retired During Period, Shares Interest rate on borrowings (as a percent) Debt Instrument, Basis Spread on Variable Rate Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Long-term debt Long-Term Debt, Excluding Current Maturities Diluted (shares) Weighted average common shares outstanding - diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Interest expense, net of interest income Interest Income (Expense), Nonoperating, Net Revenues Revenue from Contract with Customer [Text Block] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Company Selected Measure Amount Company Selected Measure Amount Additional paid-in capital Additional Paid in Capital, Common Stock Commitments And Contingencies [Table] Commitments And Contingencies [Table] Commitments And Contingencies [Table] Change in fair value Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Additional Paid-In Capital Additional Paid-in Capital [Member] Cash Flow Hedge Derivative Instrument Liabilities at Fair Value Cash Flow Hedge Derivative Instrument Liabilities at Fair Value Balance Sheet Location [Axis] Balance Sheet Location [Axis] Total assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Share Repurchase Program [Axis] Share Repurchase Program [Axis] Cover [Abstract] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Measurement input Debt Instrument, Measurement Input Fair value, measurements, recurring Fair Value, Recurring [Member] Segment reconciling items Segment Reconciling Items [Member] Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Non-NEOs Non-NEOs [Member] Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Other comprehensive income (loss) Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Foreign Currency Cash Flow Hedge Asset at Fair Value Foreign Currency Cash Flow Hedge Asset at Fair Value Segment Information Segment Reporting Disclosure [Text Block] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Non-PEO NEO Non-PEO NEO [Member] Equity Component [Domain] Equity Component [Domain] Adjustment to Compensation: Adjustment to Compensation [Axis] Text Block [Abstract] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] 2020 Share repurchase program Share Repurchase Program [Member] Share Repurchase Program [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Contract asset after allowance for credit loss Contract with Customer, Asset, after Allowance for Credit Loss Basic (shares) Weighted average common shares outstanding - basic (shares) Weighted Average Number of Shares Outstanding, Basic Entity Current Reporting Status Entity Current Reporting Status Operating income Operating income Operating Income (Loss) Option to increase revolving credit facility Optional Increase In Revolver Optional increase in revolver. Revenues and reimbursable expenses: Revenues [Abstract] Comprehensive income (loss): Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Related Party Transaction [Axis] Related Party Transaction [Axis] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Cumulative unrealized gains Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount Segments [Axis] Segments [Axis] Statement [Line Items] Statement [Line Items] Transaction Expenses Transaction Expenses [Member] Transaction Expenses Percentage of other equity interests in foreign subsidiaries Percentage Of Pledged Voting Stock In Foreign Subsidiaries Entitled to Vote The percentage of pledged voting stock or other equity instruments in the foreign subsidiaries entitled to vote to secure the revolver and term loan. Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Components of Segment Information Segment Reporting Information, Profit (Loss) [Abstract] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Customer relationships Customer Relationships [Member] Education Education [Member] Education [Member] Proceeds from bank borrowings Proceeds from Long-Term Lines of Credit Type of Restructuring [Domain] Type of Restructuring [Domain]