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Development and License Agreements - Additional Information (Detail) - USD ($) | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2020 | Mar. 31, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Sep. 30, 2023
BARDA Agreement |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Additional committed fund receivable |  |  |  |  |  | $ 3,500,000
Committed fund receivable |  |  | $ 185,500,000 |  |  |
Reduction in committed fund receivable |  |  | 8,800,000 |  |  |
Committed fund receivable |  |  | 270,200,000 |  |  |
Receivable of billed and unbilled amounts |  |  | 2,700,000 | $ 2,400,000 |  |
BARDA Agreement | Cerus Corporation | Maximum |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Co-investment by the company |  |  | 1,400,000 |  |  |
2024 BARDA Agreement |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Committed fund receivable |  |  |  |  | $ 32,100,000 |
Committed fund receivable |  |  | 188,400,000 |  |  |
2024 BARDA Agreement | Accounts Receivable, Net |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Receivable of billed and unbilled amounts |  |  | 300 | 100 |  |
2024 BARDA Agreement | Cerus Corporation | Maximum |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Co-investment by the company |  |  | 60,100,000 |  |  |
FDA Agreement |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Contract agreement term |  | 5 years |  |  |  |
Total potential contract value |  | $ 11,100,000 |  |  |  |
FDA Agreement | Accounts Receivable, Net |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Receivable of billed and unbilled amounts |  |  | 700,000 | 500,000 |  |
DoD and IBAS Program Agreement | Accounts Receivable, Net |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Receivable of billed and unbilled amounts |  |  | 0 | 1,000,000 |  |
DoD and IBAS Program Agreement | Deferred Revenue |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Receivable of billed and unbilled amounts |  |  | $ 100,000 | $ 500,000 |  |
DoD and IBAS Program Agreement | Maximum |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Total contract value | $ 17,800,000 |  |  |  |  |
DoD and IBAS Program Agreement | Minimum |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |
Total contract value | $ 9,100,000 |  |  |  |  |

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