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Government Contracts - Additional Information (Detail) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
May 31, 2021 USD ($) Option | Jul. 31, 2018 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($)
Government Contracts [Line Items] |  |  |  |  |  |
Potential Amount of Uncommitted Funding |  |  | $ 12,700 |  | $ 12,700 |
Grant revenue |  |  | 13,469 | $ 25,473 | 32,933 | $ 30,259
BARDA [Member] |  |  |  |  |  |
Government Contracts [Line Items] |  |  |  |  |  |
Potential contract amount awarded |  | $ 44,200 | 11,700 |  | 11,700 |
Potential amount increase in committed funding |  |  | 59,300 |  | 59,300 |
BARDA [Member] | Base Period Contracts [Member] |  |  |  |  |  |
Government Contracts [Line Items] |  |  |  |  |  |
Potential amount initial funding awarded |  | $ 15,700 |  |  |  |
Contract term |  | 3 years |  |  |  |
BARDA [Member] | Grant [Member] |  |  |  |  |  |
Government Contracts [Line Items] |  |  |  |  |  |
Grant revenue |  |  | 5,600 | 1,600 | 14,600 | 3,100
Niaid [Member] |  |  |  |  |  |
Government Contracts [Line Items] |  |  |  |  |  |
Committed amount from government contract |  |  |  |  | 10,500 |
Niaid [Member] | SPR206 [Member] |  |  |  |  |  |
Government Contracts [Line Items] |  |  |  |  |  |
Contract term | 5 years |  |  |  |  |
Potential amount increase in committed funding | $ 3,400 |  |  |  |  |
Grant revenue |  |  | $ 100 | $ 500 | $ 300 | $ 2,300
Award received for clinical development | $ 27,000 |  |  |  |  |
Number of option period for funding from government contract | Option | 6 |  |  |  |  |
Niaid [Member] | First Option [Member] | SPR206 [Member] |  |  |  |  |  |
Government Contracts [Line Items] |  |  |  |  |  |
Number of option period for funding from government contract | Option | 1 |  |  |  |  |

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