v3.26.3
REVENUE RECOGNITION - Schedule of Net Product Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Disaggregation of Revenue [Line Items]        
Total net product sales $ 224,563 $ 164,859 $ 521,345 $ 361,039
Total net product sales        
Disaggregation of Revenue [Line Items]        
Total net product sales 220,196 113,150 506,040 283,852
FILSPARI        
Disaggregation of Revenue [Line Items]        
Total net product sales 200,192 90,900 446,422 218,668
Tiopronin products        
Disaggregation of Revenue [Line Items]        
Total net product sales $ 20,004 $ 22,250 $ 59,618 $ 65,184