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STOCK-BASED COMPENSATION (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Stock-based compensation        
Stock-based compensation $ 399 $ 310 $ 663 $ 901
Employee stock option        
Stock-based compensation        
Stock-based compensation expense, net of estimated forfeitures, related to unvested awards not yet recognized $ 1,537   $ 1,537  
Weighted average remaining recognition period     1 year 3 months 27 days  
Restricted stock units        
Stock-based compensation        
Weighted average remaining recognition period     1 year 9 months  
Payment for tax withholding for share base compensation awards     $ 12 274
Options        
Number of Shares        
Outstanding at the beginning of the period (in shares)     605,077  
Granted (in shares)     47,150  
Exercised (in shares)     0  
Forfeited (in shares)     (2,534)  
Expired (in shares)     (23,352)  
Outstanding at the end of the period (in shares) 626,341   626,341  
Options vested and expected to vest at June 30, 2017 626,341   626,341  
Options exercisable at the end of the period (in shares) 239,253   239,253  
Weighted Average Exercise Price        
Outstanding at the beginning of the period (in dollars per share)     $ 34.49  
Granted (in dollars per share)     3.94  
Exercised (in dollars per share)     0.00  
Forfeited (in dollars per share)     5.55  
Expired (in dollars per share)     417.84  
Outstanding at the end of the period (in dollars per share) $ 18.01   18.01  
Options vested and expected to vest at September 30, 2016 (in dollars per share) 18.01   18.01  
Options exercisable at the end of the period (in dollars per share) $ 38.60   $ 38.60  
Discontinued Operations | Employee stock option        
Stock-based compensation        
Compensation cost   $ 35   $ 198