Accrued Expenses - Summary of Accrued Expenses (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Product revenue related reserves	$ 97,216	$ 100,075
Accrued contract manufacturing costs	45,057	33,024
Accrued clinical and pre-clinical costs	36,078	34,669
Accrued employee compensation costs	32,112	78,732
Accrued professional fees	21,014	17,187
Accrued income taxes	18,292	13,766
Accrued fixed assets	11,587	3,231
Accrued royalties	11,206	12,070
Accrued research expenses	2,873	2,441
Accrued Milestone Expense Current	2,000	11,375
Other	5,882	8,427
Total accrued expenses	$ 283,317	$ 314,997