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STOCKHOLDERS' EQUITY (Issuance of Series B Preferred Stock) (Details)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Mar. 05, 2014
USD ($)
$ / shares
shares
Jun. 30, 2015
USD ($)
$ / shares
Dec. 31, 2014
USD ($)
$ / shares
shares
Feb. 27, 2015
$ / shares
shares
Jan. 15, 2015
$ / shares
shares
Oct. 22, 2014
$ / shares
shares
Oct. 21, 2014
$ / shares
shares
Jan. 24, 2013
$ / shares
shares
Class of Stock [Line Items]                
Preferred stock, par value (in dollars per share)   $ 0.01 $ 0.01          
Share price (in dollars per share)   $ 1.67            
Private placement, net | $   $ 6,209 $ 2,361          
Common stock warrant, exercise price (in dollars per share)     $ 10.25 $ 7.56 $ 9.59 $ 10.86 $ 11.73  
Common stock warrant, common stock called (in shares) | shares     1,387,685 1,881,396 1,483,161 1,309,785 1,212,665  
Maximum                
Class of Stock [Line Items]                
Common stock warrant, exercise price (in dollars per share)               $ 15.00
Common stock warrant, common stock called (in shares) | shares               1,097,600
Minimum                
Class of Stock [Line Items]                
Common stock warrant, exercise price (in dollars per share)               $ 12.96
Common stock warrant, common stock called (in shares) | shares               948,333
Third Security LLC And Affiliates | Maximum                
Class of Stock [Line Items]                
Common stock warrant, exercise price (in dollars per share) $ 12.96              
Common stock warrant, common stock called (in shares) | shares 1,212,665              
Third Security LLC And Affiliates | Minimum                
Class of Stock [Line Items]                
Common stock warrant, exercise price (in dollars per share) $ 11.73              
Common stock warrant, common stock called (in shares) | shares 1,097,600              
Third Security LLC And Affiliates | Preferred Stock | Series B Preferred Stock                
Class of Stock [Line Items]                
Private placement, net, shares | shares 1,443,297              
Preferred stock, par value (in dollars per share) $ 0.01              
Share price (in dollars per share) $ 4.85              
Private placement, net | $ $ 7,000              
Conversion ratio 1