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Revenue Recognition - Summary of Product Revenue Allowance and Reserve Categories (Detail) - HEPLISAV-B $ in Thousands	6 Months Ended
	Jun. 30, 2025 USD ($)
Accounts receivable reserves
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 9,317
Provisions related to current period sales	43,813
Credit or payments made during the period	(41,519)
Adjustments	(178)
Balance at End of Period	11,433
Revenue Reserve Accruals
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	31,479
Provisions related to current period sales	29,739
Credit or payments made during the period	(23,103)
Adjustments	(10,808)
Balance at End of Period	$ 27,307