Fair Value Measurements - Fair Value Inputs, Liabilities, Quantitative Information (Details) - Fair Value, Inputs, Level 3 $ in Thousands	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Revenue-based royalty
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liabilities	$ 2,405	$ 2,870
Revenue milestones
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liabilities	20,269	41,671
Regulatory approval
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liabilities	$ 3,659	$ 3,693
Discount rate | Revenue-based royalty | Minimum | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs, contingent liability	0.13	0.13
Discount rate | Revenue-based royalty | Maximum | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs, contingent liability	0.16	0.16
Discount rate | Revenue-based royalty | Weighted Average | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs, contingent liability	0.155	0.147
Discount rate | Revenue milestones | Minimum | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs, contingent liability	0	0.075
Discount rate | Revenue milestones | Maximum | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs, contingent liability	0.13	0.125
Discount rate | Revenue milestones | Weighted Average | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs, contingent liability	0.038	0.082
Discount rate | Regulatory approval | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs, contingent liability	0.031	0.026
Probability of milestone payment | Regulatory approval | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs, contingent liability	0.80	0.80