Fair Value - Additional Information (Details)	3 Months Ended	12 Months Ended
Mar. 31, 2022 USD ($) Installment	Dec. 31, 2021 USD ($)
Fair Value
Transfers between Level 1 to Level 2	$ 0
Transfers between Level 2 to Level 1	0
Milestone payments received		$ 7,800,000
Milestone payment receivable	$ 38,600,000
Number of equal annual installments milestone payment \| Installment	6
Contingent consideration	$ 3,400,000	23,000,000.0
Contingent consideration included within prepaid expenses and other current assets	3,400,000	6,400,000
Contingent consideration included within other assets	0	16,600,000
2026 Term Loans
Fair Value
Amount to be realized in future	285,100,000	$ 285,800,000
Baudax
Fair Value
Milestone payments received	500,000
Milestone payment receivable	$ 6,400,000
Percentage of reduction in workforce planned		80.00%
Weighting percentage of default on obligations	100.00%
Percentage of discount recovery rate	9.00%
Baudax \| Maximum
Fair Value
Milestone payment receivable	$ 80,000,000.0

Fair value recurring basis assets or liabilities transfers between level one to level two.

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Fair value recurring basis assets or liabilities transfers between level two to level one.

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Milestone payments received.

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Percentage of discount recovery rate.

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Percentage of reduction in workforce planned.

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