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Revenue Recognition - Summary of Product Revenue Allowance and Reserve Categories (Detail) - HEPLISAV-B® $ in Thousands | 6 Months Ended
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Jun. 30, 2020 USD ($)
Accounts Receivable Reserves |
Product Revenue Allowance and Revenue Categories [Line Items] |
Balance at Beginning of Period | $ 2,701
Provisions related to current period sales | 3,594
Credit or payments made during the period | (4,230)
Balance at End of Period | 2,065
Revenue Reserve Accruals |
Product Revenue Allowance and Revenue Categories [Line Items] |
Balance at Beginning of Period | 3,893
Provisions related to current period sales | 2,793
Credit or payments made during the period | (2,816)
Balance at End of Period | $ 3,870

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