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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