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STOCKHOLDERS' DEFICIT - PIPE Warrants (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Mar. 09, 2015
Mar. 31, 2010
Dec. 31, 2016
Jul. 31, 2015
Jun. 30, 2015
Class of Stock [Line Items]          
Warrants, exercise price (in USD per share)   $ 10.00      
Warrants, exercise term   5 years      
Percentage of market price for exercise of warrants (less than)     85.00%    
Fair value allocated to PIPE Warrants $ 3,145        
Class A Warrants          
Class of Stock [Line Items]          
Warrants outstanding (in shares) 1,800,000     31,025  
Warrants, exercise price (in USD per share) $ 5.17        
Class B Warrants          
Class of Stock [Line Items]          
Warrants outstanding (in shares) 1,800,000     31,025  
Warrants, exercise price (in USD per share) $ 6.45       $ 6.45
2015 Warrants          
Class of Stock [Line Items]          
Proceeds from modification of warrant terms $ 500        
Warrants, exercise term     10 years    
Discount related to issuance costs (203)        
Carrying value of PIPE Warrants $ 2,942        
Class A Warrants Prior to Addendum          
Class of Stock [Line Items]          
Warrants, exercise price (in USD per share) $ 5.295        
Class B Warrants Prior to Addendum          
Class of Stock [Line Items]          
Warrants, exercise price (in USD per share) $ 6.595