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Product Revenue Reserves and Allowances - Product Revenue Allowance and Reserves (Detail) - USD ($) $ in Thousands | 12 Months Ended
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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

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