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Product Revenue Reserves and Allowances - Product Revenue Allowance and Reserves (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Product Revenue Reserves And Allowances [Line Items]    
Beginning balance $ 1,712 $ 2,241
Provision related to sales in the current year 13,396 4,175
Adjustments related to prior period sales (272) (337)
Deductions applied and payments made (11,483) (4,367)
Ending balance 3,353 1,712
Chargebacks, Discounts and Fees [Member]    
Disclosure Of Product Revenue Reserves And Allowances [Line Items]    
Beginning balance 574 1,618
Provision related to sales in the current year 7,274 2,141
Adjustments related to prior period sales (50) (387)
Deductions applied and payments made (6,645) (2,798)
Ending balance 1,153 574
Government and Other Rebates [Member]    
Disclosure Of Product Revenue Reserves And Allowances [Line Items]    
Beginning balance 535 271
Provision related to sales in the current year 5,337 1,056
Adjustments related to prior period sales (22)  
Deductions applied and payments made (4,029) (792)
Ending balance 1,821 535
Returns [Member]    
Disclosure Of Product Revenue Reserves And Allowances [Line Items]    
Beginning balance 603 352
Provision related to sales in the current year 785 978
Adjustments related to prior period sales (200) 50
Deductions applied and payments made (809) (777)
Ending balance $ 379 $ 603