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Product Revenues, Accounts Receivable, and Reserves for Product Sales - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Product Revenues Accounts Receivable And Reserves For Product Sales [Line Items] |  |  |  |  |
Accounts receivable | $ 279,011 |  | $ 279,011 |  | $ 206,442
Accrued Expenses [Member] |  |  |  |  |
Product Revenues Accounts Receivable And Reserves For Product Sales [Line Items] |  |  |  |  |
Product revenue allowance and reserves | $ 32,900 |  | $ 32,900 |  | $ 16,600
Customer Concentration Risk [Member] | Gross Product Revenues [Member] | Product [Member] |  |  |  |  |
Product Revenues Accounts Receivable And Reserves For Product Sales [Line Items] |  |  |  |  |
Concentration risk percentage | 10.00% | 10.00% | 10.00% | 10.00% |
Customer Concentration Risk [Member] | Product Sales Accounts Receivable [Member] | Product [Member] |  |  |  |  |
Product Revenues Accounts Receivable And Reserves For Product Sales [Line Items] |  |  |  |  |
Concentration risk percentage | 10.00% | 10.00% | 10.00% | 10.00% |

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