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Collaborative Research, Development and License Agreements - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Jul. 31, 2023	Apr. 26, 2023
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Accrued liabilities		$ 65,952		$ 65,952		$ 61,066
Accounts receivables, allowance for doubtful accounts		12,313		12,313		12,313	$ 12,300
Total revenues		95,442	$ 73,795	163,606	$ 124,584
U S Department Of Defense
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Government assistance, award amount						30,000		$ 33,700
Coalition for Epidemic Preparedness Innovations Partners
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Advance Payments forgiven per CEPI-Bio E Assignment Agreement (Note 6)		175,000		175,000
Repayment of advance from customer		67,300		67,300
Accrued liabilities		47,400		47,400
Accrual long term balance		60,300		60,300
Zhejiang Clover Biopharmaceuticals Inc And Clover Hong Kong Inc
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Accrual long term balance		60,300		60,300
Zhejiang Clover Biopharmaceuticals Inc And Clover Hong Kong Inc | Supply Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Contract with customer, asset, allowance for credit loss		11,000		11,000
Contract asset		60,300		60,300		$ 71,300
Biological E. Limited | Term 1
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Additional future payment									$ 5,500
Advance payment received									125,000
Biological E. Limited | Term 2
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Additional future payment									12,300
Advance payment received									$ 250,000
U S Department Of Defense
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Proceeds from grant	$ 22,000
Transaction duration	2 years 6 months
Total revenues		$ 3,300	$ 3,600	$ 6,200	$ 6,400

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