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Product Revenues, Accounts Receivable, and Reserves for Product Sales - Summary of Product Revenue Allowance and Reserve Categories (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Chargebacks, Discounts, and Fees [Member]    
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]    
Beginning Balance $ 164 $ 67
Provision related to sales in the current year 17,690 614
Adjustments related to prior period sales (112) (156)
Credits and payments made (12,068) (362)
Ending balance 5,674 164
Government and Other Rebates [Member]    
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]    
Beginning Balance 1,936 716
Provision related to sales in the current year 26,661 4,569
Adjustments related to prior period sales (1,223) (246)
Credits and payments made (18,476) (3,103)
Ending balance 8,898 1,936
Returns [Member]    
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]    
Beginning Balance 251 167
Provision related to sales in the current year 4,698 1,185
Adjustments related to prior period sales (2,481) (385)
Credits and payments made (415) (716)
Ending balance 2,053 251
Product Revenue Allowance and Reserves [Member]    
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]    
Beginning Balance 2,351 951
Provision related to sales in the current year 49,050 6,368
Adjustments related to prior period sales (3,817) (787)
Credits and payments made (30,960) (4,181)
Ending balance $ 16,625 $ 2,351