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SCHEDULE II - Valuation and Qualifying Accounts (Detail) - Allowance for Distribution Fees, Discounts and Chargebacks - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Valuation And Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ 4,221 $ 2,576 $ 1,840
Additions, Provision Related to Current Period Sales 72,011 51,684 33,827
Deductions, Actual Distribution Fees, Discounts and Chargebacks Related to Current Period Sales (63,544) (47,463) (31,251)
Deductions, Actual Distribution Fees, Discounts and Chargebacks Related to Prior Period Sales (4,221) (2,576) (1,840)
Balance at End of Period $ 8,467 $ 4,221 $ 2,576