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Organization - Additional Information (Detail) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Jul. 31, 2023 | Mar. 31, 2024 | Dec. 31, 2023
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |
Long-term debt, net of debt discount |  | $ 2,516 | $ 2,802
Increase in revenue adjustment | $ 38,000 |  |
2.50% Convertible Senior Notes Due 2026 |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |
Long-term debt, net of debt discount |  | $ 2,500 |
HEPLISAV-B |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |
Minimum age approved for vaccine prevention of infection caused |  | 18 years |

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