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STOCK-BASED COMPENSATION - Summary of option activity (Details) - $ / shares
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Number of Stock Options          
Outstanding (in shares)     2,475,363    
Granted (in shares) 0 0 48,133 0  
Forfeited (in shares)     (227,826)    
Expired (in shares)     (37,045)    
Outstanding (in shares) 2,258,625   2,258,625   2,475,363
Exercisable, end of period (in shares) 509,118   509,118    
Weighted Average Grant Date Fair Value          
Outstanding (in dollars per share)     $ 4.12    
Granted (in dollars per share)     3.67    
Forfeited (in dollars per share)     4.23    
Expired (in dollars per share)     4.23    
Outstanding (in dollars per share) $ 4.10   4.10   $ 4.12
Weighted Average Exercise Price          
Outstanding (in dollars per share)     11.65    
Granted (in dollars per share)     9.95    
Forfeited (in dollars per share)     11.73    
Expired (in dollars per share)     11.73    
Outstanding (in dollars per share) $ 11.60   $ 11.60   $ 11.65
Weighted Average Remaining Contractual Life (years)          
Outstanding (in years)     8 years   8 years 9 months 18 days
Granted (in years)     6 years 6 months