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Development, Commercialization and Supply Agreement - Changes in Balances of Contract Assets and Liabilities (Detail) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Contract liabilities:    
Deferred revenue, Balance at Beginning of Period $ 15,346 $ 16,709
Deferred revenue, Additions 5,000  
Deferred revenue, Deductions (15,372)  
Deferred revenue, Deductions (15,000) (1,012)
Deferred revenue, Balance at End of Period $ 4,974 $ 15,697