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CAPITAL STOCK - Share Repurchase Progam (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended 59 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Feb. 08, 2018
Jul. 29, 2015
Share Repurchase Program [Line Items]                  
Stock Repurchased and Retired During Period, Value $ (68,000) $ 0   $ (3,024,000)          
Weighted Average Share Repurchase Price     $ 3.42            
Share Repurchase Program [Member] | Common Stock [Member]                  
Share Repurchase Program [Line Items]                  
Stock Repurchase Program Authorization Date             Jul. 29, 2015    
Stock Repurchased and Retired During Period, Shares         19,891 469,975 5,865,511    
Stock Repurchased and Retired During Period, Value         $ 100,000 $ 3,000,000 $ 40,400,000    
Weighted Average Share Repurchase Price         $ 3.42 $ 6.43 $ 7.1    
Share Repurchase Program [Member] | Maximum [Member] | Common Stock [Member]                  
Share Repurchase Program [Line Items]                  
Share Repurchase                 2,000,000
Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased 837,311       837,311   837,311    
Program Increase [Member] | Common Stock [Member]                  
Share Repurchase Program [Line Items]                  
Stock Repurchase Program Authorization Date             Feb. 08, 2018    
Program Increase [Member] | Maximum [Member] | Common Stock [Member]                  
Share Repurchase Program [Line Items]                  
Share Repurchase               4,522,822