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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2022
Fair Value Disclosures [Abstract] |
Summary of Cash, Cash Equivalents and Marketable Securities Held to Maturity | The following table summarizes the Company's cash, cash equivalents and marketable securities held to maturity as of December 31, 2022:
|  | As of December 31, 2022 |
|  | Amortized Costs |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
|  | (Amounts in thousands) |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Cash and money market funds |  | $ | 523,458 |  |  | $ | — |  |  | $ | — |  |  | $ | 523,458 |
Total cash and cash equivalents |  |  | 523,458 |  |  |  | — |  |  |  | — |  |  |  | 523,458 |
Marketable securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury bills - short-term |  |  | 100,299 |  |  |  | 24 |  |  |  | — |  |  |  | 100,323 |
Total cash, cash equivalents and marketable securities |  | $ | 623,757 |  |  | $ | 24 |  |  | $ | — |  |  | $ | 623,781 |
Schedule of Amortized Cost and Fair Value Held to Maturity Securities by Contractual Maturity | The amortized cost and fair value of the Company's held to maturity securities by contractual maturity at December 31, 2022 are summarized below. There is no comparable investment as of December 31, 2021:
|  | December 31, 2022 |
|  | Amortized Costs |  |  | Estimated Fair Value |
Maturity of one year or less |  | $ | 100,299 |  |  | $ | 100,323 |
Total |  | $ | 100,299 |  |  | $ | 100,323 |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | Financial assets and financial liabilities measured at fair value on a recurring basis consist of the following as of December 31, 2022 and 2021:
|  | As of December 31, 2022 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Money market accounts |  | $ | 343,929 |  |  | $ | — |  |  | $ | — |  |  | $ | 343,929 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Short-term contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | 13,950 |  |  | $ | 13,950 |
Long-term contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | 51,559 |  |  | $ | 51,559 |
|  | As of December 31, 2021 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Money market accounts |  | $ | 460,936 |  |  | $ | — |  |  | $ | — |  |  | $ | 460,936 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Long-term contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | 94,238 |  |  | $ | 94,238 |
Schedule of Reconciliation of the Change in the Fair Value of Contingent Consideration - Earnout | A reconciliation of the change in fair value of contingent consideration – earnout is included in the following table (amounts in thousands):
Balance at December 31, 2021 |  | $ | 94,238 |
Decrease in fair value of contingent consideration earnouts |  |  | (28,729 | )
Balance at December 31, 2022 |  | $ | 65,509 |
Schedule of Contingent Consideration Earnout Expect to be Required to Settle Include Significant Unobservable Inputs | The recurring Level 3 fair value measurement of our contingent consideration – earnout that we expect to be required to settle, include the following significant unobservable inputs:
Contingent Consideration Earnout |  | Fair Value as of December 31, 2022 |  | Valuation Technique |  | Unobservable Input |  | Range |  | Weighted Average(1)
|  |  |  |  |  |  | Probability of |  |  |  |
Commercialization-based |  |  |  |  | Monte Carlo |  | Success |  | 100% |  | 100%
payments |  | $ |  | 28,969 |  | Simulation |  | Earnout Discount Rate |  | 5.4%-6.1% |  | 5.7%
|  |  |  |  |  |  | Volatility |  | 20.8% |  | 20.8%
Revenue and Volume- |  |  |  |  | Monte Carlo |  | Revenue & Volume |  |  |  |
based payments |  | $ |  | 36,540 |  | Simulation |  | Discount Rate |  | 5.4% |  | 5.4%
|  |  |  |  |  |  | Earnout Discount Rate |  | 5.4%-6.1% |  | 5.7%
(1) Unobservable inputs were weighted by the relative fair value of the contingent consideration liability.

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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 + Details
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