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Accounts Receivable - Additional Information (Detail) $ in Millions | 3 Months Ended
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Mar. 31, 2022 USD ($) Distributor
Accounts Receivable [Line Items] |
Number of wholesale distributors | Distributor | 3
Percentage of gross sales from major wholesale distributors | 69.00%
Allowance for credit losses for accounts receivable | $ 0.8
Percentage of revenue from major customers collaborations and services | 94.00%
United Therapeutics Corporation |
Accounts Receivable [Line Items] |
Percentage of collaborations and services net accounts receivables | 100.00%
Vertice Pharma LLC |
Accounts Receivable [Line Items] |
Allowance for credit losses for accounts receivable | $ 0.8
Commercial product sales |
Accounts Receivable [Line Items] |
Percentage of accounts receivable from major wholesale distributors | 74.00%

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