Revenue Recognition - Summarize Activity of the Net Product Revenue Allowance and Reserve Categories (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	$ 123,247	$ 113,241
Provision related to current period sales	426,323	357,306
Provision related to prior period sales	186	(166)
Credits/payments made for current period sales	(302,847)	(262,484)
Credits/payments made for prior period sales	(121,437)	(108,089)
Ending balance	125,472	99,808
Trade Allowances
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	17,189	9,433
Provision related to current period sales	39,651	34,338
Credits/payments made for current period sales	(25,611)	(21,366)
Credits/payments made for prior period sales	(16,446)	(8,779)
Ending balance	14,783	13,626
Rebates, Chargebacks and Discounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	102,257	97,526
Provision related to current period sales	380,239	314,792
Provision related to prior period sales	186	(166)
Credits/payments made for current period sales	(273,393)	(235,627)
Credits/payments made for prior period sales	(101,483)	(95,273)
Ending balance	107,806	81,252
Product Returns
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	2,541	4,734
Provision related to current period sales	908	794
Credits/payments made for current period sales	0	(50)
Credits/payments made for prior period sales	(1,913)	(2,334)
Ending balance	1,536	3,144
Other Incentives
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	1,260	1,548
Provision related to current period sales	5,525	7,382
Credits/payments made for current period sales	(3,843)	(5,441)
Credits/payments made for prior period sales	(1,595)	(1,703)
Ending balance	$ 1,347	$ 1,786