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EMPLOYEE STOCK PLANS - Narrative (Details) - USD ($)
12 Months Ended
Aug. 17, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Feb. 28, 2007
Employee stock option            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares outstanding (in shares)   339,376 358,073 432,642 307,845  
Vesting period   10 years        
Options vesting on an annual basis, 20% of group per year (in shares)   296,874        
Annual vesting percentage, vesting group 20% per year   20.00%        
Options vesting on an annual basis, 16.67% of group per year (in shares)   42,502        
Annual vesting percentage, vesting group 16.67% per year   16.67%        
Unrecognized compensation cost related to non-vested share-based compensation arrangements   $ 682,000        
Share-based compensation expense   336,000 $ 442,000 $ 308,000    
Intrinsic value of the options exercised   $ 10,000 217,000 41,000    
Shares granted (in shares)   5,000        
Shares granted (in dollars per share)   $ 3.17        
Omnibus Incentive Compensation Plan 2007            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common shares outstanding reserved for issuance under the plan (in shares)           525,000
Shares available for grant (in shares)   99,226        
Omnibus Incentive Compensation Plan 2007 | Employee stock option            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares outstanding (in shares)   339,376        
Omnibus Incentive Compensation Plan 2007 | Restricted stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period 3 years          
Share-based compensation expense   $ 19,000 $ 0 $ 21,000    
Shares granted (in shares) 11,250 11,250        
Shares granted (in dollars per share) $ 13.92          
Unrecognized compensation cost   $ 137,000