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Product Revenues, Accounts Receivable, and Reserves for Product Sales - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Product Revenues Accounts Receivable And Reserves For Product Sales [Line Items]
Accounts receivable	$ 345,538		$ 345,538		$ 264,926
Revenue	458,578	$ 196,830	803,869	$ 568,839
Outstanding amount of sold accounts receivable			0		86,100
Accrued Expenses [Member]
Product Revenues Accounts Receivable And Reserves For Product Sales [Line Items]
Product sales reserves	47,400		47,400		$ 45,100
Product [Member]
Product Revenues Accounts Receivable And Reserves For Product Sales [Line Items]
Revenue	$ 177,755	$ 176,571	$ 499,042	$ 518,782

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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