v3.26.1
Product Revenue, Net
 6 Months Ended
Jun. 30, 2026
Revenue from Contract with Customer [Abstract]  
Product Revenue, Net Product Revenue, Net
The following table summarizes balances and activity for gross to net reserves (in thousands):
Chargebacks, Discounts for Prompt Pay and Other Allowances
Rebates, Co-Pay Assistance, Returns, and Other
Totals
Balance at December 31, 2025$8,838 $90,504 $99,342 
Provision related to sales in the current year77,223 264,464 341,687 
Adjustments related to prior year sales(2,286)(3,179)(5,465)
Payments and customer credits issued(60,285)(199,517)(259,802)
Balance at June 30, 2026$23,490 $152,272 $175,762 
Concentrations of Credit Risk and Significant Customers
The Company generates revenue from a small number of large, reputable customers. The following customers accounted for over 10% of total gross product revenue during the three and six months ended June 30, 2026 and 2025.
Three Months Ended
June 30,		Six Months Ended
June 30,
2026202520262025
Customer A
28 %34 %29 %34 %
Customer B
20 %23 %19 %23 %
Customer C
16 %12 %15 %11 %
Customer D
14 %15 %13 %15 %
Customer E
12 %2 %13 %2 %