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SHARE-BASED COMPENSATION - Summary of Stock options activity (Details) - Employee Stock Option [Member] - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Number of units      
Outstanding at the beginning 1,006,000 1,025,000  
Granted   43,000  
Exercised (6,000) (6,000)  
Forfeited   (56,000)  
Outstanding at the end 1,000,000 1,006,000 1,025,000
Exercisable 90,000 96,000  
Weighted Average Exercise Price Per Unit      
Outstanding at the beginning (in dollars per share) $ 41.35 $ 40.59  
Granted (in dollars per share)   22.94  
Exercised (in dollars per share) 16.01 16.01  
Forfeited (in dollars per share)   16.01  
Outstanding at the end (in dollars per share) 41.51 41.35 $ 40.59
Exercisable (in dollars per share) 44.00 42.18  
Weighted Average Grant Date Fair Value Per Unit      
Outstanding at the beginning (in dollars per share) 5.22 4.99  
Granted (in dollars per share)   15.32  
Exercised (in dollars per share) 8.57 8.57  
Forfeited (in dollars per share)   8.57  
Outstanding at the end (in dollars per share) 5.20 5.22 $ 4.99
Exercisable (in dollars per share) $ 4.49 $ 4.76  
Weighted Average Remaining Contractual Life and Aggregate Intrinsic Value      
Outstanding (in years) 8 years 10 days 8 years 3 months 10 days 9 years 5 months 8 days
Granted (in years)   4 years 8 months 12 days  
Exercisable (in years) 8 years 5 months 8 days 8 years 5 months 8 days  
Non-vested shares 910,000    
Unrecognized compensation expense $ 4,332    
Unrecognized compensation expense, recognition period 8 years    
Share based compensation expense $ 147 $ 126