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Revenue Recognition - Schedule of Revenues from Major Customers (Detail) - HEPLISAV-B - Product Concentration Risk - Revenue Benchmark	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Largest customer
Concentration Risk [Line Items]
Percentage of product revenue	31.00%	27.00%
Second largest customer
Concentration Risk [Line Items]
Percentage of product revenue	20.00%	19.00%
Third largest customer
Concentration Risk [Line Items]
Percentage of product revenue	18.00%	18.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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