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STOCK COMPENSATION - NARRATIVE (Details)
3 Months Ended 12 Months Ended 27 Months Ended
Mar. 31, 2024
plan
shares
Dec. 31, 2023
shares
Mar. 31, 2023
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Number of equity incentive plans | plan 2    
Stock options      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Vesting period (in years) 4 years    
Expiration term (in years) 5 years    
RSUs      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Vesting period (in years) 4 years    
2014 Plan      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Shares authorized (in shares) 798,805    
2021 Plan      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Shares authorized (in shares) 625,000    
Shares issued (in shares)     774,904
Shares cancelled (in shares)   384,340