NET PRODUCT REVENUES - Summary of Balances and Activity in Each Product Revenue Allowance and Reserve Category (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 208,998	$ 131,316
Provision related to current period sales	404,992	273,570
Credit or payments made during the period for current year sales	(179,020)	(128,345)
Credit or payments made during the period for prior year sales	(89,029)	(67,543)
Total	345,941	208,998
Chargebacks and Rebates
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	191,772	120,682
Provision related to current period sales	367,005	245,236
Credit or payments made during the period for current year sales	(147,749)	(108,185)
Credit or payments made during the period for prior year sales	(85,356)	(65,961)
Total	325,672	191,772
Trade Discounts and Allowances
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	2,450	522
Provision related to current period sales	18,500	13,085
Credit or payments made during the period for current year sales	(16,137)	(10,310)
Credit or payments made during the period for prior year sales	(1,696)	(847)
Total	3,117	2,450
Returns Reserve and Other Incentives
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	14,776	10,112
Provision related to current period sales	19,487	15,249
Credit or payments made during the period for current year sales	(15,134)	(9,850)
Credit or payments made during the period for prior year sales	(1,977)	(735)
Total	$ 17,152	$ 14,776