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Other Operating Assets Entity Emerging Growth Company Entity Emerging Growth Company Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Award Type [Axis] Award Type [Axis] Weighted- Average Grant Date Fair Value per Share Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Prepaid Expenses and Other Current Assets Prepaid Expenses and Other Current Assets [Member] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Principal payments on debt Repayments of Secured Debt Maximum Maximum [Member] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Retained Earnings/(Accumulated Deficit) Retained Earnings [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Payment of contingent consideration Payment for Contingent Consideration Liability, Financing Activities 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] Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Weighted average remaining contractual life, in years Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Domain] Award Type [Domain] Database Database [Member] Database [Member] Trading Symbol Trading Symbol Cash divested Cash Divested from Deconsolidation Disposal Group Classification [Domain] Disposal Group Classification [Domain] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Four Lessee, Operating Lease, Liability, to be Paid, after Year Four Treasury stock, at cost, 419 shares of Class A common stock as of March 31, 2021 and December 31, 2020 Treasury Stock, Value Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Current liabilities Liabilities, Current [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Excluding Amortization of Financing Costs Depreciation, Depletion and Amortization, Excluding Amortization of Financing Costs Entity Shell Company Entity Shell Company Fair value, recurring measurements Fair Value, Recurring [Member] Recent Accounting Pronouncements Adopted in 2020 and 2021 New Accounting Pronouncements, Policy [Policy Text Block] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract]