Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Statistical Measurement [Domain] Statistical Measurement [Domain] Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Award Timing Predetermined Award Timing Predetermined [Flag] 2026 (remaining) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Intangible assets, gross carrying amount Intangible Assets, Gross (Excluding Goodwill) Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Performance obligations satisfied or partially satisfied in previous periods Contract with Customer, Performance Obligation Satisfied in Previous Period Tabular List, Table Tabular List [Table Text Block] Leases [Abstract] New Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Guarantor obligations, facility Guarantor Obligations, Maximum Exposure, Undiscounted Goodwill [Line Items] Goodwill [Line Items] Strategic Communications Strategic Communications Segment [Member] Strategic Communications [Member] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Earnings per common share — basic (in dollars per share) Earnings per common share — basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable, accrued expenses and other Increase (Decrease) in Accounts Payable and Accrued Liabilities Economic Consulting Economic Consulting Segment [Member] Economic Consulting [Member] Revenues Revenue from Contract with Customer [Text Block] Unbilled receivables Unbilled Receivables, Current Schedule of Revenues and Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization for Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Restricted share grants, less net settled shares (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Stockholders Equity [Table] Stockholders Equity [Table] Stockholders' Equity [Table] Unfulfilled performance obligations Revenue, Remaining Performance Obligation, Amount Adjustment to Compensation, Amount Adjustment to Compensation Amount Share-based compensation Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Excise tax on purchase and retirement of common stock Excise tax Share Repurchase Program, Excise Tax Foreign currency translation adjustments, tax expense Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Antidilutive Securities [Axis] Antidilutive Securities [Axis] Total stockholders’ equity Beginning Balance Ending Balance Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Total share-based compensation expense Share-Based Payment Arrangement, Expense Common stock, shares authorized (in shares) Common Stock, Shares Authorized Goodwill and Intangible Assets Disclosure [Abstract] Current assets Assets, Current [Abstract] Restricted stock forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Total liabilities and stockholders’ equity Liabilities and Equity Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Cover [Abstract] Special charges Special charges Restructuring and Related Cost, Incurred Cost Maximum Maximum [Member] Accounting Policies [Abstract] Net Carrying Amount Finite-Lived Intangible Assets, Net Schedule of Future Minimum Lease Payments Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Restricted Stock Awards Restricted Stock [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Total lease liabilities Total lease liabilities Operating Lease, Liability Foreign currency translation adjustments, net of tax expense of $0 Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Technology Technology Segment [Member] Technology [Member] Depreciation of property and equipment Depreciation, Depletion and Amortization, Nonproduction Income before income tax provision Income before income tax provision Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Other liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Current portion of long-term debt Long-Term Debt, Current Maturities 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Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Lease Cost Lease, Cost [Abstract] Repayments under revolving line of credit Repayments of Lines of Credit Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Less: deferred debt issuance costs Debt Issuance Costs, Net Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Gross carrying amount, non-amortizing intangible assets Indefinite-Lived Intangible Assets (Excluding Goodwill) Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Provision for expected credit losses Provision for expected credit losses Accounts Receivable, Credit Loss Expense (Reversal) PEO PEO [Member] Changes in operating assets and liabilities, net of effects from acquisitions: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Exercise of options Stock Issued During Period, Value, Stock Options Exercised Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Guarantor obligations, carrying value Guarantor Obligations, Current Carrying Value Deferred income taxes Deferred Income Tax Expense (Benefit), Excluding CTA Deferred Income Tax Expense (Benefit), Excluding CTA Retained Earnings Retained Earnings [Member] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Share-Based Payment Arrangement [Abstract] Cash and cash equivalents, beginning of period Cash and cash equivalents, end of 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Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Term Loan Term Loan [Member] Term Loan Class of Treasury Stock [Table] Class of Treasury Stock [Table] Commitments and Contingencies Disclosure [Abstract] Schedule of Earnings Per Share Basic and Diluted by Common Class [Table] Schedule of Earnings Per Share Basic and Diluted by Common Class [Table] Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Issuance of common stock in connection with: Shares Granted or Issued, Share-Based Payment Arrangement [Abstract] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Selling, general and administrative expenses Selling, General and Administrative Expenses [Member] Total lease cost, net Lease, Cost Direct cost of revenues Cost of Sales [Member] Goodwill Goodwill beginning of period Goodwill end of period Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Schedule of Lease Cost Lease, Cost [Table Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Equity Components [Axis] Equity Components [Axis] Issuance of stock units under incentive compensation plans Stock Issued During Period Value Stock Units Under Incentive Compensation Plan Market value of stock units issued under incentive compensation plans. Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Operating expenses Operating Costs and Expenses [Abstract] Number of reportable segments Number of Reportable Segments Supplemental cash flow disclosures Supplemental Cash Flow Information [Abstract] Stock repurchase program additional amount authorized Stock Repurchase Program, Additional Authorized Amount Stock repurchase program, additional authorized amount. Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Accumulated impairment loss Goodwill, Impaired, Accumulated Impairment Loss Other Performance Measure, Amount Other Performance Measure, Amount Entity Address, State or Province Entity Address, State or Province Allowance for Doubtful Accounts and Unbilled Services [Abstract] Allowance for Doubtful Accounts and Unbilled Services [Abstract] Total current liabilities Liabilities, Current Individual: Individual [Axis] Accounting Changes and Error Corrections [Abstract] Additional paid-in capital Additional Paid in Capital, Common Stock Amortization of intangibles Amortization Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Performance obligation expected duration Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Operating lease assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Current portion of notes receivable Financing Receivable, after Allowance for Credit Loss, Current Entity Interactive Data Current Entity Interactive Data Current Operating lease costs Operating Lease, Cost Operating activities Cash Provided by (Used in) Operating Activity, Continuing Operation [Abstract] Forensic and Litigation Consulting (“FLC”) Forensic and Litigation Consulting Segment [Member] Forensic and Litigation Consulting [Member] Exercise of options (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Equity [Abstract] Segment Reporting Segment Reporting Disclosure [Text Block] Goodwill [Table] Goodwill [Table] Variable rate, adjustment (as a percent) Debt Instrument, Basis Spread On Variable Rate, Adjustment Debt Instrument, Basis Spread On Variable Rate, Adjustment Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Amortization of intangible assets Amortization of intangible assets Amortization of other intangible assets Amortization of Intangible Assets Selling, general and administrative expenses Selling, General and Administrative Expense Other assets Other Assets, Noncurrent Notes receivable, net Financing Receivable, after Allowance for Credit Loss, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Revolving Credit Facility Revolving Credit Facility [Member] Notes receivable, net of repayments Increase (Decrease) in Notes Receivable, Current Other comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Billings in excess of services provided Contract with Customer, Liability, Current Segments [Axis] Segments [Axis] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Billed receivables Accounts Receivable, before Allowance for Credit Loss, Current Schedule of Carrying Amount of Operating Lease Assets and Liabilities Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Share-Based Compensation Share-Based Payment Arrangement [Text Block] Purchase and retirement of common stock, including excise tax (in shares) Shares of common stock repurchased and retired (in shares) Stock Repurchased and Retired During Period, Shares Billings in excess of services provided Increase Decrease in Billing in Excess of Service Provided Net change during the period in billings in excess of services provided. Assets Assets [Abstract] Long-term debt, net Long-Term Debt, Excluding Current Maturities Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Fronting fees (as a percent) Line Of Credit Facility Fronting Fee Percentage Line Of Credit Facility Fronting Fee Percentage Debt Instrument [Axis] Debt Instrument [Axis] Credit Facility [Domain] Credit Facility [Domain] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Stockholders’ equity Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Award vesting rights, percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Entity Address, Address Line One Entity Address, Address Line One Amortization of notes receivable Amortization Of Loans To Employees Amortization Of Loans To Employees Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Allowance for expected credit losses Accounts Receivable, Allowance for Credit Loss, Current Net settled shares (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Noncurrent operating lease liabilities Operating Lease, Liability, Noncurrent Fair Value as of Grant Date Award Grant Date Fair Value Entity Registrant Name Entity Registrant Name Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Compensation expenses Employee Benefits and Share-Based Compensation Schedule of Components of Debt Obligations Schedule of Long-Term Debt Instruments [Table Text Block] Effect of dilutive share-based awards and stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Share-based awards granted (in shares) Share-Based Compensation Arrangement by 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Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Corporate Finance Corporate Finance And Restructuring [Member] Corporate Finance And Restructuring Schedule of Special Charges by Segment Restructuring and Related Costs [Table Text Block] Deposits and other Proceeds from (Payment for) Other Financing Activity Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] 2027 Lessee, Operating Lease, Liability, to be Paid, Year One London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) 1 [Member] London Interbank Offered Rate (LIBOR) 1 Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Guarantor obligations, remaining guarantor capacity available Guarantor Obligation, Remaining Guarantor Capacity Available Guarantor Obligation, Remaining Guarantor Capacity Available Federal Funds Base Rate Federal Funds Base Rate [Member] Federal Funds Base Rate Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Accrued compensation Increase (Decrease) in Employee Related Liabilities Corporate Finance Corporate Finance Segment [Member] Corporate Finance Segment Share Repurchase Program Share Repurchase Program [Axis] Schedule of Accounts Receivable, Writeoff Accounts Receivable, Allowance for Credit Loss [Table Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Segment Reporting, Other Significant Reconciling Item [Line Items] Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] Denominator Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Other Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease) Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Goodwill Goodwill, Gross Reclassification of negative additional paid-in capital Adjustments to Additional Paid in Capital, Reclassification Of Negative Additional Paid In Capital Adjustments to Additional Paid in Capital, Reclassification Of Negative Additional Paid In Capital Segments [Domain] Segments [Domain] Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Axis] Schedule of Other Intangible Assets Amortized Intangibles Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Performance-based Restricted Unit Performance Shares [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Minimum Minimum [Member] Company Selected Measure Name Company Selected Measure Name Stockholders Equity [Line Items] Stockholders Equity [Line Items] Stockholders Equity [Line Items] Debt Debt Disclosure [Text Block] Preferred stock, $0.01 par value; shares authorized — 5,000; none outstanding Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net income — diluted Net Income (Loss) Available to Common Stockholders, Diluted All Executive Categories All Executive Categories [Member] Common stock, $0.01 par value; shares authorized — 75,000; shares issued and outstanding 30,145 (2026) and 30,864 (2025) Common Stock, Value, Issued Goodwill [Roll Forward] Goodwill [Roll Forward] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Weighted average number of common shares outstanding — diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Commitments and contingencies (Note 10) Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] FLC Forensic And Litigation Consulting [Member] Forensic And Litigation Consulting [Member] Entity Small Business Entity Small Business Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report New Accounting Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Borrowings under revolving line of credit Proceeds from Lines of Credit Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Revenue from Contract with Customer [Abstract] Average price paid per share (in dollars per share) Shares Acquired, Average Cost Per Share Document Type Document Type Earnings per Common Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Variable lease costs and other Variable Lease, Cost Revenues Revenues Revenue from Contract with Customer, Excluding Assessed Tax All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Purchases of property and equipment and other Payments to Acquire Property, Plant, and Equipment Economic Consulting Economic Consulting Economic Consulting [Member] Economic Consulting [Member] Name Forgone Recovery, Individual Name Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Stock repurchase program authorized amount Share Repurchase Program, Authorized, Amount Commitment fee (as a percent) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Credit Facility Credit Facility [Member] Credit facility [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Foreign currency translation adjustment Goodwill, Foreign Currency Translation, Gain (Loss) Share-based compensation tax withholdings Payment, Tax Withholding, Share-Based Payment Arrangement Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Net income — basic Net Income (Loss) Available to Common Stockholders, Basic Earnings Per Common Share [Line Items] Earnings Per Common Share [Line Items] Earnings Per Common Share [Line Items] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Share Repurchase Program Share Repurchase Program [Domain] Total other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Current liabilities Liabilities, Current [Abstract] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Earnings per common share — diluted (in dollars per share) Earnings per common share — diluted (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable, net Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Title of 12(b) Security Title of 12(b) Security Non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Earnings Per Share [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Other income (expense) Nonoperating Income (Expense) Total segment gross profit Total segment gross profit Gross Profit Purchase and retirement of common stock, including excise tax Total cost Stock Repurchased and Retired During Period, Value Segment, Reconciliation of Other Items from Segments to Consolidated [Table] Segment, Reconciliation of Other Items from Segments to Consolidated [Table] Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Interest income and other Interest income and other Interest and Other Income Expense Net Interest and Other Income (Expense), Net Cash paid for income taxes and tax credits, net of refunds Income Taxes Paid, Net Award Timing Disclosures [Line Items] Stock Options and Share-Based Awards Stock Options And Share-Based Awards [Member] Stock Options And Share-Based Awards Long-term debt, gross Long-Term Debt, Gross Accrued compensation Employee-related Liabilities, Current Technology Technology Technology [Member] Technology [Member] Total future lease payments Lessee, Operating Lease, Liability, to be Paid Direct costs Direct Operating Costs Stockholders' Equity Equity [Text Block] Net income Net income Net income Net Income (Loss) Attributable to Parent Expiration Date Trading Arrangement Expiration Date Property and equipment, net Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Special charges Restructuring Charges Schedule of Reconciliation of Net Income to Adjusted Segment Earnings Before Interest, Taxes, Depreciation and Amortization Schedule Of Reconciliation Of Adjusted Segment E B I T D A Table [Table Text Block] Reconciliation of adjusted segment EBITDA to income before income tax provision. Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Purchase and retirement of common stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Base Rate Base Rate [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable, billed and unbilled Increase (Decrease) in Accounts Receivable Restructuring Cost [Table] Restructuring Cost [Table] Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Financing activities Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Operating income Operating Income (Loss) Line of Credit Line of Credit [Member] Retained earnings Retained Earnings (Accumulated Deficit) Schedule of Stock Repurchases Schedule Of Stock Repurchase [Table Text Block] Schedule Of Stock Repurchase [Table Text Block] Numerator — basic and diluted Earnings Per Share Basic and Diluted Numerator [Abstract] Earnings Per Share Basic and Diluted Numerator [Abstract] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Proceeds from issuance of term loan Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Statement [Table] Statement [Table] Adjustments to reconcile net income to net cash used in operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Variable Rate [Domain] Variable Rate [Domain] Antidilutive share-based awards and stock options (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Accounts payable, accrued expenses and other Accounts Payable and Accrued Liabilities, Current Amendment Flag Amendment Flag Leases Lessee, Operating Leases [Text Block] Termination Date Trading Arrangement Termination Date Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Weighted average discount rate, Operating leases Operating Lease, Weighted Average Discount Rate, Percent Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Weighted average number of common shares outstanding — basic (in shares) Weighted Average Number of Shares Outstanding, Basic Restricted share grants, less net settled shares Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Available amount under repurchase program Share Repurchase Program, Remaining Authorized, Amount Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Schedule of Earnings Per Share Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Segment Reporting [Abstract] Direct cost of revenues Cost of Revenue Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Other income (expense) Nonoperating Income (Expense) [Abstract] Entity Tax Identification Number Entity Tax Identification Number 2016 Stock Repurchase Program Two Thousand Sixteen Stock Repurchase Program [Member] Two thousand sixteen stock repurchase program. Write-offs Accounts Receivable, Allowance for Credit Loss, Writeoff Restructuring and Related Activities [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Beginning Balance (in shares) Ending Balance (in shares) Common Stock, Shares, Issued Weighted average remaining lease term (years), Operating leases Operating Lease, Weighted Average Remaining Lease Term Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Schedule of Changes in Carrying Amounts of Goodwill by Operating Segment Schedule of Goodwill [Table Text Block] Interest expense Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Income taxes Increase (Decrease) in Income Taxes Payable Total Shareholder Return Amount Total Shareholder Return Amount Cumulative translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Four Lessee, Operating Lease, Liability, to be Paid, after Year Four Unallocated Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Accounts receivable: Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] Non-cash additions to property and equipment Capital Expenditures Incurred but Not yet Paid Senior secured revolving line of credit Line of Credit Facility, Maximum Borrowing Capacity Accounts Receivable and Allowance for Expected Credit Losses Provision for Doubtful Accounts Disclosure [Text Block] Provision for Doubtful Accounts Disclosure [Text Block] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Statement [Line Items] Statement [Line Items] Variable Rate [Axis] Variable Rate [Axis] Consolidation Items [Axis] Consolidation Items [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Payment Guarantee Payment Guarantee [Member] Net decrease in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation