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SHAREHOLDERS EQUITY - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
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
Shares repurchased 739,778      
Shares repurchased, average price per share $ 28.39      
Shares repurchased during period, value $ 21,002,000      
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%    
Common stock, shares subscribed but unissued   542,302    
Purchase of shares (dividend reinvestment program), shares   778,407    
Sale of shares (dividend reinvestment program)   $ 16,677,000 $ 36,588,000  
Plan [Member]        
Class Of Stock [Line Items]        
Purchase of shares (dividend reinvestment program), shares 129,738      
Sales of shares (Dividend Reinvestment Program), shares   1,320,709