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Collaborative Research, Development and License Agreements - Additional Information (Detail) - USD ($) $ in Thousands		1 Months Ended			3 Months Ended
	Apr. 26, 2023	Aug. 31, 2023	Apr. 30, 2023	Sep. 30, 2021	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Jul. 31, 2023	Apr. 27, 2023
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Repayment of advance from customer										$ 47,400
Accrued liabilities					$ 54,292		$ 61,066
Prepayment of advance payment		$ 1,000	$ 13,500
Allowance for doubtful accounts receivables					12,313		12,313	$ 12,300
Total revenues					68,164	$ 50,790
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
Repayment of advance from customer					67,300
Accrued liabilities					47,400
Accrual long term balance					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
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
Contract asset					60,300		$ 71,300
Biological E. Limited
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Repayment of advance from customer	$ 47,400
Prepayment of advance payment	14,500
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					$ 2,800	$ 2,800

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