Accounts Payable and Accrued Expenses - Summary of Provision for Sales and Allowances (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts Payable And Accrued Expenses [Line Items]
Total accrued sales discounts, allowances and reserves	$ 265,172	$ 237,216
Medicaid Rebate
Accounts Payable And Accrued Expenses [Line Items]
Total accrued sales discounts, allowances and reserves	224,216	195,413
Product Discounts
Accounts Payable And Accrued Expenses [Line Items]
Total accrued sales discounts, allowances and reserves	13,204	14,951
Medicare Part D
Accounts Payable And Accrued Expenses [Line Items]
Total accrued sales discounts, allowances and reserves	17,350	14,348
Other
Accounts Payable And Accrued Expenses [Line Items]
Total accrued sales discounts, allowances and reserves	$ 10,402	$ 12,504