Basis of Presentation and Significant Accounting Policies - Summary of Percentage of the Company's Total Net Product Revenue (Detail) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Customer A [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	74.00%	69.10%
Customer B [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	6.40%	10.50%
Customer C [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	8.30%	10.10%
Customer [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	88.70%	89.70%