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price (in dollars per share) Share Price Retained earnings (accumulated deficit) Accumulated deficit Retained Earnings (Accumulated Deficit) Former Address Former Address [Member] Restricted Stock Units (RSUs) [Member] Restricted Stock Units (RSUs) [Member] Allowance for doubtful accounts Contract with Customer, Asset, Allowance for Credit Loss Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Entity Filer Category Entity Filer Category Share Repurchase Program [Axis] Share Repurchase Program [Axis] Equity investments Equity Method Investments U.S. Government bonds US Treasury Securities [Member] Income Statement [Abstract] Income Statement [Abstract] Entity Registrant Name Entity Registrant Name Expected to vest (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Expected To Vest, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based 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Attributable to Noncontrolling Interest Amortization of premium (accretion of discount) on available-for-sale securities, net Accretion (Amortization) of Discounts and Premiums, Investments Amortization of debt issuance costs Amortization of Debt Issuance Costs CASH, CASH EQUIVALENTS, AND RESTRICTED CASH—Beginning of period CASH, CASH EQUIVALENTS, AND RESTRICTED CASH—End of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Unbilled accounts receivable, net Contract with Customer, Asset, after Allowance for Credit Loss, Current United States UNITED STATES Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Leases [Abstract] Unrealized gains (losses) on available-for-sale securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Total cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Entity Address, Postal Zip Code Entity Address, Postal Zip Code Accelerated Share Repurchase Agreement Accelerated Share Repurchase Agreement [Member] Accelerated Share Repurchase Agreement Issuance of common stock upon exercise of stock options (in shares) Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Aggregate intrinsic value, released Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Error Corrections and Prior Period Adjustments Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Amortization Amortization Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Schedule of Share-based Compensation, Stock Options, Activity Share-based Payment Arrangement, Option, Activity [Table Text Block] Cost of license revenue Cos Of License Revenues [Member] Cos Of License Revenues Schedule of Antidilutive Securities excluded from EPS Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Total Cash, Cash Equivalents And Debt Securities, Available For Sale Cash, Cash Equivalents And Debt Securities, Available For Sale Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] De-recognition of operating lease asset Operating Lease, Right-of-Use-Asset, Derecognition Operating Lease, Right-of-Use-Asset, Derecognition Class of Stock [Line Items] Class of Stock [Line Items] Purchase obligation Purchase Obligation Entity Address, Address Line One Entity Address, Address Line One Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Released (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value General and Administrative Expense [Member] General and administrative General and Administrative Expense [Member] Entity Shell Company Entity Shell Company Total current liabilities Liabilities, Current Accelerated depreciation related to lease assignment Restructuring and Related Cost, Accelerated Depreciation Money market funds Money Market Funds [Member] Vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Current Fiscal Year End Date Current Fiscal Year End Date Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement [Table] Statement [Table] Asset-backed securities Asset-backed Securities [Member] Recent Accounting Pronouncements Not Yet Adopted; Other Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Prepaid Expenses and Other Current Assets Prepaid Expenses and Other Current Assets [Member] Unrecognized stock-based compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Goodwill Goodwill License License [Member] Operating lease cost Operating Lease, Cost Computer hardware Computer Equipment [Member] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Debt discount(1) Debt Instrument, Unamortized Discount Contract costs, current Capitalized Contract Cost, Net, Current Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Convertible senior notes, net Convertible senior notes, net Senior Notes Vested and expected to vest, weighted average remaining contractual life Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Accounting Standards Update 2020-06 [Member]