Accounts Receivable - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2025 USD ($) Distributor
Accounts Receivable [Line Items]
Number of wholesale distributors | Distributor	3
Percentage of gross sales from major wholesale distributors	75.00%
Allowance for credit losses and doubtful accounts | $	$ 0
United Therapeutics Corporation
Accounts Receivable [Line Items]
Percentage of collaborations and services net accounts receivables	98.00%
Percentage of revenue from major customers collaborations and services	98.00%
Commercial product sales
Accounts Receivable [Line Items]
Percentage of accounts receivable from major wholesale distributors	86.00%