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Contract liabilities, net of current portion Contract with Customer, Liability, Noncurrent Stock options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Stock issued or granted during period [Abstract] Shares Granted or Issued, Share-based Payment Arrangement [Abstract] Debt instrument, redemption price, percentage Debt Instrument, Redemption Price, Percentage Entity Filer Category Entity Filer Category Share-based Payment Arrangement, Expensed and Capitalized, Amount Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Debt instrument, covenant, net leverage ratio, adjustment Debt Instrument, Covenant, Net Leverage Ratio, Two Debt Instrument, Covenant, Net Leverage Ratio, Two $0.001 Par Value Common Stock Common Stock [Member] Foreign Currency Translation Losses Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Product and Service [Domain] Product and Service [Domain] Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Convertible Debt Convertible Debt [Member] Property, plant and equipment Property, Plant and Equipment [Table Text Block] Intangible assets, gross Finite-Lived Intangible Assets, Gross Stated percentage Debt Instrument, Interest Rate, Stated Percentage Cost Finite-Lived Intangible Assets, Net [Abstract] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Revenue, remaining performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Money market accounts Money Market Funds [Member] Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment 3.875% Senior Unsecured Notes due 2028 Senior Unsecured Notes Due August 2028 [Member] Senior Unsecured Notes Due August 2028 Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Total other income (expense), net Nonoperating Income (Expense) Principal payments on convertible senior notes Repayments of Convertible Debt Hedging Relationship [Domain] Hedging Relationship [Domain] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Stock Options Share-based Payment Arrangement, Option [Member] Percentage of original principal amount required to repay remaining year Percentage of Original Principal Amount Required to Repay Remaining Years The rate of interest that was being paid on the original debt issue that is to repay in remaining years. 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Award Type [Axis] Award Type [Axis] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Finite-lived intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Maximum Maximum [Member] Amortization of deferred financing costs Amortization of Debt Issuance Costs Total operating expenses Operating Costs and Expenses Federal Funds Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Retained Earnings Retained Earnings [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Contingent consideration payments Payment for Contingent Consideration Liability, Financing Activities Effective annual tax rate Effective Income Tax Rate Reconciliation, Percent 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] Basis of Presentation and Principles of Consolidation Significant Accounting Policies [Text Block] Net cash used in investing activities: Net Cash Provided by (Used in) Investing Activities Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Allowance for doubtful accounts receivable Accounts Receivable, Allowance for Credit Loss Award Type [Domain] Award Type [Domain] Trading Symbol Trading Symbol Denominator: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Debt instrument, covenant, net leverage ratio rolling period Debt Instrument, Covenant, Net Leverage Ratio Rolling Period Debt Instrument, Covenant, Net Leverage Ratio Rolling Period Debt, current portion Notes Payable, Current Property, plant and equipment Property, Plant and Equipment Disclosure [Text Block] Proceeds from share-based compensation activity Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised Treasury stock, at cost, 1.2 common shares Treasury Stock, Value Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Net income (loss) per share Earnings Per Share [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Current liabilities: Liabilities, Current [Abstract] Entity Shell Company Entity Shell Company Billed, net Billed Contracts Receivable Cash proceeds excess amount from dispositions of property or casualty events subject to certain reinvestment right Cash Proceeds Excess Amount from Dispositions of Property or Casualty Events Subject to Certain Reinvestment Right The cash proceeds in excess during the term of the Senior Secured Credit Facility from certain dispositions of property or from casualty events involving their property, subject to certain reinvestment rights. Fair Value, Recurring Fair Value, Recurring [Member] Recently issued accounting standards New Accounting Pronouncements, Policy [Policy Text Block] Discount rate Measurement Input, Discount Rate [Member] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract]