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Collaboration, Development and Supply Agreements-Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Feb. 28, 2021	Jan. 31, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Long-term deferred revenue	$ 64,350
Revenue recognized	83,335		$ 10,919
Valneva SE
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Deferred revenue	51,000
Valneva SE | Supply Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Deferred revenue		$ 14,200
Revenue recognized		$ 64,900
CEPI Member
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Interest- free unsecured forgivable loan					$ 99,000
Advance payment from customer	18,600			$ 45,800
Long-term deferred revenue	$ 64,400

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Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current.

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