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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Severance and Transition (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Stock-based compensation expense $ 602 $ 709 $ 2,700 $ 1,900
Chief Executive Officer        
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Severance costs     2,200  
Stock-based compensation expense     737  
Transition related expenses     $ 306