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in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Tabular List, Table Tabular List [Table Text Block] Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] Other income (expense) Other Nonoperating Income (Expense) Long-term income tax receivable Income Taxes Receivable, Noncurrent Schedule of Accounts Payable and Other Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Remaining tangible net assets acquired Business Combination, Recognized Asset Acquired, Tangible Asset Business Combination, Recognized Asset Acquired, Tangible Asset Name Awards Close in Time to MNPI Disclosures, Individual Name 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] General and administrative expenses General and Administrative Expense Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Accrued payroll Accrued Bonuses, Current Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest Interest Paid, Excluding Capitalized Interest, Operating Activity Purchases of property, equipment, and software Payments to Acquire Productive Assets Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total Assets Assets, Fair Value Disclosure Number of corporate office spaces Number Of Lease Agreements Number Of Lease Agreements Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Pay vs Performance Disclosure [Line Items] Triggering Event [Domain] Triggering Event [Domain] Triggering Event Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Aggregate purchase amount Business Combination, Consideration Transferred Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Subcontractor Sales Channel, Through Intermediary [Member] Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Compensation Related Costs [Abstract] Compensation Related Costs [Abstract] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Non‑current unbilled receivables Business Combination, Recognized Asset Acquired, Receivable, Noncurrent Business Combination, Recognized Asset Acquired, Receivable, Noncurrent Venture Capital Funds Venture Capital Funds1 [Member] Venture Capital Funds1 Depreciation and amortization Depreciation, Depletion and Amortization Number of employees Entity Number of Employees Term Loan A-1 Term Loan A - 1 [Member] Term Loan A - 1 Accrued paid time off Accrued Vacation, Current Customer [Domain] Contract with Customer, Sales Channel [Domain] Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax expense Income Tax Expense (Benefit) Customer Concentration Risk Customer Concentration Risk [Member] Cost of revenue Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] 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 Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Defy Security Defy Security [Member] Defy Security Deferred tax liabilities Business Combination, Recognized Liability Assumed, Deferred Tax Liability Time-and-materials Time-and-Materials Contract [Member] Net income Net income Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Earnings for diluted computations Undistributed Earnings, Diluted Schedule of Contract Assets and Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Term Loan A-2 Term Loan A - 2 [Member] Term Loan A - 2 Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]