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EMPLOYEE BENEFIT PLANS - Summary of changes in non-vested restricted shares (Details) - Restricted shares of common stock - $ / shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Shares      
Non-vested shares at beginning 671,370 678,220  
Granted 311,703 189,750  
Vested (193,403) (194,800)  
Forfeited (25,500) (1,800)  
Non-vested shares at ending 764,170 671,370 678,220
Weighted Average Grant-Date Fair Value      
Non-vested shares at beginning $ 14.70 $ 12.89  
Granted 11.61 16.55 $ 15.00
Vested 11.96 10.25  
Forfeited 14.11 11.76  
Non-vested shares at ending $ 14.15 $ 14.70 $ 12.89