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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		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Customer A [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	76.50%	70.20%	75.30%	69.70%
Customer B [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	8.50%	11.20%	9.10%	10.40%
Customer [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	85.00%	81.40%	84.40%	80.10%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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