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SHAREHOLDERS EQUITY - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jul. 25, 2019
Class Of Stock [Line Items]        
Stock repurchase program, number of shares authorized to be repurchased, percentage       5.00%
Stock repurchase program, number of shares authorized to be repurchased 960,000     960,000
Shares purchased 220,222 739,778    
Shares repurchased, average price per share $ 29.45 $ 28.39    
Shares repurchased during period, value $ 6,487,000 $ 21,002,000    
Stock repurchase program average price per share $ 28.63      
Stock repurchase total cost $ 27,500,000      
Quarterly cash payment that may be made under Dividend Reinvestment Program $ 200,000      
Percent of fair market value which shares may be purchased at under the DRIP     97.00%  
Fair market value discount     3.00%  
Plan [Member]        
Class Of Stock [Line Items]        
Purchase of shares (dividend reinvestment program), shares 97,032 129,738