Accrued Expenses - Summary of Accrued Expenses (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Product revenue related reserves	$ 108,721	$ 100,075
Accrued contract manufacturing costs	75,909	33,024
Accrued employee compensation costs	57,107	78,732
Accrued clinical and pre-clinical costs	40,514	34,669
Accrued professional fees	21,486	17,187
Accrued income taxes	14,696	13,766
Accrued royalties	12,185	12,070
Accrued fixed assets	4,821	3,231
Accrued research expenses	2,882	2,441
Accrued interest	1,118	4,395
Other	5,391	15,407
Total accrued expenses	$ 344,830	$ 314,997