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Fair Value Measurements - Significant Unobservable Inputs in the Valuation of Contingent Consideration Liabilities (Details) $ in Thousands | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
--- | --- | --- | ---
Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Contingent consideration | $ 84,600 | $ 58,100 | $ 75,668
Development and regulatory milestones |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Contingent consideration | 74,800 | 48,100 |
Priority review voucher milestone |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Contingent consideration | $ 6,000 | $ 6,800 |
Priority review voucher milestone | Probabilities of success | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Measurement input | 0.164 | 0.164 |
Priority review voucher milestone | Discount rate | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Measurement input | 0.100 | 0.085 |
Minimum | Development and regulatory milestones | Probabilities of success | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Measurement input | 0.14 | 0.14 |
Maximum | Development and regulatory milestones | Probabilities of success | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Measurement input | 0.97 | 0.95 |

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