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Product Revenue, Net (Tables)
9 Months Ended
Sep. 30, 2022
Revenue from Contract with Customer [Abstract]  
Schedule of Chargebacks, Discounts and Reserve Balances
The activities and ending reserve balances for each significant category of discounts and allowances, which constitute variable consideration, were as follows (in thousands):
Discounts and ChargebacksRebatesOther Fees, Copay and ReturnsTotal
Balance as of December 31, 2021$ $— $— $— 
Activity related to 2022 sales358 1,158 1,115 2,631 
Credits/deductions issued(250)(438)(576)(1,264)
Balance as of September 30, 2022$108 $720 $539 $1,367