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CAPITAL STOCK - Share Repurchase Progam (Narrative) (Details) - Share Repurchase Program [Member] - Common Stock [Member] - USD ($)
9 Months Ended 12 Months Ended 26 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Sep. 30, 2017
Jul. 29, 2015
Share Repurchase Program [Line Items]        
Stock Repurchase Program Authorization Date     Jul. 29, 2015  
Stock Repurchased and Retired During Period, Shares 0 0 1,216,243  
Stock Repurchased and Retired During Period, Value     $ 10,800,000  
Weighted Average Share Repurchase Price     $ 8.92  
Maximum [Member]        
Share Repurchase Program [Line Items]        
Share Repurchase       2,000,000