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STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Included in Operating Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Compensation cost recognized $ 729 $ 712 $ 1,768 $ 6,006
Selling, general & administrative        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Compensation cost recognized 561 614 1,270 5,536
Research & development        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Compensation cost recognized $ 168 $ 98 $ 498 $ 470