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Revenue Recognition - Summary of Balances and Activities Deferred Revenue Accounts (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2022
USD ($)
Deferred Revenue Arrangement [Line Items]  
Balance at Beginning of Period $ 349,864
Balance at End of Period 87,395
CpG 1018 adjuvant  
Deferred Revenue Arrangement [Line Items]  
Balance at Beginning of Period 349,864
Additions (1) 12,068 [1]
Subtractions (2) (12,068) [2]
Revenue recognized in the current period included in deferred revenue balance at the beginning of the period (262,469)
Balance at End of Period 87,395
Long-term Deferred Revenue | CpG 1018 adjuvant  
Deferred Revenue Arrangement [Line Items]  
Balance at Beginning of Period 5,385
Additions (1) 6,582 [1]
Subtractions (2) $ 11,967 [2]
[1]

(1) Additions are, primarily, revenues recognized for CpG 1018 adjuvant transferred to Clover that is reserved under the CEPI Agreement, as amended.
[2]

(2) Subtractions are reclassifications from contract asset to accounts receivables.