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Government Contracts - Additional Information (Detail)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
May 31, 2021
USD ($)
Option
Jul. 31, 2018
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
Government Contracts [Line Items]            
Potential Amount of Uncommitted Funding     $ 12,700   $ 12,700  
Grant revenue     13,469 $ 25,473 32,933 $ 30,259
BARDA [Member]            
Government Contracts [Line Items]            
Potential contract amount awarded   $ 44,200 11,700   11,700  
Potential amount increase in committed funding     59,300   59,300  
BARDA [Member] | Base Period Contracts [Member]            
Government Contracts [Line Items]            
Potential amount initial funding awarded   $ 15,700        
Contract term   3 years        
BARDA [Member] | Grant [Member]            
Government Contracts [Line Items]            
Grant revenue     5,600 1,600 14,600 3,100
Niaid [Member]            
Government Contracts [Line Items]            
Committed amount from government contract         10,500  
Niaid [Member] | SPR206 [Member]            
Government Contracts [Line Items]            
Contract term 5 years          
Potential amount increase in committed funding $ 3,400          
Grant revenue     $ 100 $ 500 $ 300 $ 2,300
Award received for clinical development $ 27,000          
Number of option period for funding from government contract | Option 6          
Niaid [Member] | First Option [Member] | SPR206 [Member]            
Government Contracts [Line Items]            
Number of option period for funding from government contract | Option 1