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Fair Value Measurements - Schedule of Contingent Consideration Earnout Expect to be Required to Settle Include Significant Unobservable Inputs (Detail) - Contingent Consideration - USD ($) $ in Thousands | Sep. 30, 2021 | Sep. 20, 2021 | Dec. 31, 2020
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Liabilities, fair value |  | $ 79,962 |  | $ 0
Monte Carlo Simulation | Fair Value, Recurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Probability of success |  |  | 100.00% |
R&D and Commercialization-based Payments | Monte Carlo Simulation | Fair Value, Recurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Liabilities, fair value |  | 28,553 |  |
R&D and Commercialization-based Payments | Monte Carlo Simulation | Fair Value, Recurring | Probability of Success |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Weighted average discount rate | [1] |  | 100.00% |
R&D and Commercialization-based Payments | Monte Carlo Simulation | Fair Value, Recurring | Earnout Discount Rate |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Weighted average discount rate | [1] |  | 2.00% |
Revenue and Volume Based Payments | Monte Carlo Simulation | Fair Value, Recurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Liabilities, fair value |  | $ 51,409 |  |
Volatility |  |  | 32.80% |
Revenue and volume discount rate |  |  | 9.40% |
Revenue and Volume Based Payments | Monte Carlo Simulation | Fair Value, Recurring | Earnout Discount Rate |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Weighted average discount rate | [1] |  | 2.00% |
Revenue and Volume Based Payments | Monte Carlo Simulation | Fair Value, Recurring | Volatility |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Weighted average discount rate | [1] |  | 32.80% |
Revenue and Volume Based Payments | Monte Carlo Simulation | Fair Value, Recurring | Revenue & Volume Discount Rate |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Weighted average discount rate | [1] |  | 9.40% |
Minimum | R&D and Commercialization-based Payments | Monte Carlo Simulation | Fair Value, Recurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Discount Rate |  |  | 1.40% |
Minimum | Revenue and Volume Based Payments | Monte Carlo Simulation | Fair Value, Recurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Discount Rate |  |  | 1.40% |
Maximum | R&D and Commercialization-based Payments | Monte Carlo Simulation | Fair Value, Recurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Discount Rate |  |  | 2.60% |
Maximum | Revenue and Volume Based Payments | Monte Carlo Simulation | Fair Value, Recurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Discount Rate |  |  | 2.60% |
[1] | Unobservable inputs were weighted by the relative fair value of the contingent consideration liability.

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