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STOCK-BASED COMPENSATION - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Jun. 30, 2017
May 31, 2017
Jun. 30, 2016
May 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense $ 140 $ 236        
Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Grant of restricted common stock (shares) 151,000 90,000        
Restricted Stock | First anniversary of grant date            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting percentage of awards 33.33%          
Restricted Stock | Second anniversary of grant date            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting percentage of awards 33.33%          
Restricted Stock | Third anniversary of grant date            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting percentage of awards 33.33%          
2008 Stock Purchase Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of quoted market price offering rate 85.00%          
Restriction period 2 years          
Shares authorized under the plan (shares)         350,000 150,000
2010 Long Term Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares reserved for future issuance (shares)     680,000 380,000