Revenue Recognition - Summarize Activity of the Net Product Revenue Allowance and Reserve Categories (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	$ 113,241	$ 171,501
Provision related to current period sales	571,535	661,470
Provision related to prior period sales	562	(2,111)
Credits/payments made for current period sales	(463,740)	(542,351)
Credits/payments made for prior period sales	(110,431)	(160,109)
Ending balance	111,167	128,400
Trade Allowances
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	9,433	18,834
Provision related to current period sales	56,169	62,211
Credits/payments made for current period sales	(44,049)	(50,145)
Credits/payments made for prior period sales	(8,779)	(18,383)
Ending balance	12,774	12,517
Rebates, Chargebacks and Discounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	97,526	143,033
Provision related to current period sales	504,168	589,133
Provision related to prior period sales	562	(2,111)
Credits/payments made for current period sales	(411,114)	(484,127)
Credits/payments made for prior period sales	(96,717)	(136,588)
Ending balance	94,425	109,340
Product Returns
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	4,734	7,732
Provision related to current period sales	1,301	1,459
Credits/payments made for current period sales	(81)	(167)
Credits/payments made for prior period sales	(3,232)	(3,152)
Ending balance	2,722	5,872
Other Incentives
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	1,548	1,902
Provision related to current period sales	9,897	8,667
Credits/payments made for current period sales	(8,496)	(7,912)
Credits/payments made for prior period sales	(1,703)	(1,986)
Ending balance	$ 1,246	$ 671