Product Revenues, Net, Accounts Receivable and Reserves for Product Revenues - Summary of Total Reserves Included in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Receivables, Net, Current [Abstract]
Reduction to accounts receivable	$ 47,606	$ 25,914
Component of accrued expenses	85,678	68,784
Total reserves	$ 133,284	$ 94,698	$ 87,249	$ 70,466