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Revenue Recognition - Summary of Product Revenue Allowance and Reserve Categories (Detail) - HEPLISAV-B
$ in Thousands
 3 Months Ended
Mar. 31, 2022
USD ($)
Accounts Receivable Reserves  
Valuation And Qualifying Accounts Disclosure [Line Items]  
Balance at Beginning of Period $ 3,823 [1]
Provisions related to current period sales 5,807 [1]
Credit or payments made during the period (4,698) [1]
Balance at End of Period 4,932 [1]
Revenue Reserve Accruals  
Valuation And Qualifying Accounts Disclosure [Line Items]  
Balance at Beginning of Period 8,253 [2]
Provisions related to current period sales 4,273 [2]
Credit or payments made during the period (4,893) [2]
Balance at End of Period $ 7,633 [2]
[1] Reserves are for chargebacks, discounts and other fees
[2] Accruals are for returns, rebates and other fees.