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STOCK PLANS AND STOCK BASED COMPENSATION - Performance Measures and Additional Disclosures (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Mar. 31, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Additional disclosures          
Shares of common stock granted 17,976 358,000      
Compensation expense $ 90   $ 70 $ 179 $ 160
Performance units | Executive officers          
Performance Measures          
Return on assets criteria (as a percent)       50.00%  
Total shareholder return criteria (as a percent)       25.00%  
Earnings per share criteria (as a percent)       25.00%  
Additional disclosures          
Vesting period       3 years  
Shares of common stock granted   16,152 16,205    
Compensation expense $ 56     $ 82  
Threshold | Performance units | Executive officers          
Performance Measures          
Performance levels (as a percent)       0.00%  
Target | Performance units | Executive officers          
Performance Measures          
Performance levels (as a percent)       100.00%  
Superior | Performance units | Executive officers          
Performance Measures          
Performance levels (as a percent)       150.00%