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Product Revenue and Reserves for Variable Consideration (Tables)
 9 Months Ended
Sep. 30, 2022
Revenue from Contract with Customer [Abstract]  
Product Revenue Allowance and Reserve Categories The following table summarizes activity in each of the product revenue allowance and reserve categories for the nine months ended September 30, 2022 and 2021 (in thousands): 
 Chargebacks
and Discounts		Rebates, Fees
and other
Deductions		ReturnsTotal
Balance at December 31, 2021$1,278 $26,625 $475 $28,378 
Current provisions related to sales in current year8,592 64,322 3,692 76,606 
Adjustments related to prior year sales(248)33 — (215)
Credits/payments made(8,194)(65,611)(3,669)(77,474)
Balance at September 30, 2022$1,428 $25,369 $498 $27,295 
Balance at December 31, 2020$802 $39,912 $649 $41,363 
Current provisions related to sales in current year8,911 105,432 4,866 119,209 
Adjustments related to prior year sales(1)(1,590)— (1,591)
Credits/payments made(8,593)(99,518)(4,979)(113,090)
Balance at September 30, 2021$1,119 $44,236 $536 $45,891