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Revenue Recognition - Summary of Balances and Activities Deferred Revenue Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Deferred Revenue Arrangement [Line Items]    
Balance at Beginning of Period $ 38,212  
Balance at End of Period 349,864 $ 38,212
CpG 1018    
Deferred Revenue Arrangement [Line Items]    
Balance at Beginning of Period 38,212
Additions 371,860 38,212
Subtractions (21,996)
Revenue recognized in the current period included in deferred revenue balance at the beginning of the period 38,212
Balance at End of Period 349,864 38,212
CpG 1018 | Long-term Deferred Revenue    
Deferred Revenue Arrangement [Line Items]    
Balance at Beginning of Period
Additions 168,467
Subtractions (163,082)
Revenue recognized in the current period included in deferred revenue balance at the beginning of the period
Balance at End of Period $ 5,385