ACCRUED EXPENSES - Summary of Accrued Expenses (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Accrued contract manufacturing costs	$ 190,343	$ 104,311
Product revenue related reserves	67,942	62,145
Accrued employee compensation costs	42,689	48,299
Accrued clinical and pre-clinical costs	31,794	25,955
Accrued professional fees	13,888	9,381
Accrued royalties	7,862	11,965
Accrued income taxes	4,095	216
Accrued interest expense	2,935	1,045
Accrued collaboration cost sharing	1,868	2,887
Accrued sponsored research agreements	1,237	3,377
Other	4,345	2,116
Total accrued expenses	$ 368,998	$ 271,697