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Revenue Recognition - Summary of Product Revenue Allowance and Reserve Categories (Detail) - HEPLISAV-B - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Accounts Receivable Reserves |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at beginning of period | [1] | $ 8,179 | $ 3,823
Provisions related to current period sales | [1] | 55,604 | 34,758
Credit or payments made during the period | [1] | (54,143) | (30,402)
Adjustments related to prior periods | [1] | (2,629) | 0
Balance at end of period | [1] | 7,011 | 8,179
Revenue Reserve Accruals |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at beginning of period | [2] | 10,552 | 8,253
Provisions related to current period sales | [2] | 46,062 | 24,806
Credit or payments made during the period | [2] | (38,207) | (22,507)
Adjustments related to prior periods | [2] | 2,597 | 0
Balance at end of period | [2] | $ 21,004 | $ 10,552
[1] | Reserves are for chargebacks, discounts and other fees
[2] | Accruals are for returns, rebates and other fees

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