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CAPITAL STOCK (Details) - $ / shares
12 Months Ended
Dec. 31, 2017
Jun. 30, 2017
Dec. 31, 2016
Nov. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized   1,290,000   3,750,000
Common Stock, Par or Stated Value Per Share $ 0.01 $ 0.01 $ 0.01 $ 0.01
Shares available for issuance 691,701      
Non-employee Director [Member]        
Stock Incentive Plans [Abstract]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 1 year      
Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares available for issuance 117,764