STOCKHOLDERS' EQUITY (Preferred Stock Series B) (Details) $ / shares in Units, $ in Thousands					12 Months Ended
	Jan. 06, 2016	Jul. 07, 2015 $ / shares shares	Mar. 05, 2014 USD ($) $ / shares shares	Jan. 24, 2013 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 $ / shares shares	Jun. 30, 2015 $ / shares shares	Feb. 27, 2015 $ / shares shares	Jan. 15, 2015 $ / shares shares	Dec. 31, 2014 $ / shares shares	Oct. 22, 2014 $ / shares shares	Oct. 21, 2014 $ / shares shares	Jan. 31, 2013 $ / shares shares	Feb. 02, 2012 $ / shares shares
Class of Stock [Line Items]
Private placement, net, shares | shares		1,500,000		1,383,333
Preferred stock, par value (in usd per share)					$ 0.01	$ 0.01
Share price (in usd per share)		$ 1.42		$ 6.00
Issuance of shares | $				$ 8,300	$ 506
Common stock warrant, exercise price (in usd per share)		$ 6.50			$ 10.25	$ 10.25	$ 7.56	$ 7.56	$ 9.59	$ 10.86	$ 10.86	$ 11.73	$ 12.96	$ 15.00
Common stock warrant, common stock called (in shares) | shares		2,188,177		691,656	1,387,685	1,387,685	1,881,396	1,881,396	1,483,161	1,309,785	1,309,785	1,212,665	1,097,600	948,333
Preferred Stock | Series B Preferred Stock
Class of Stock [Line Items]
Conversion ratio	1
Third Security LLC And Affiliates
Class of Stock [Line Items]
Common stock warrant, exercise price (in usd per share)			$ 11.73	$ 12.96
Common stock warrant, common stock called (in shares) | shares			1,212,665	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 usd per share)			$ 0.01
Share price (in usd per share)			$ 4.85
Issuance of shares | $			$ 7,000
Conversion ratio			1