DERIVATIVE INSTRUMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class of Warrant or Right
Reclassification of derivative warrant liability to additional paid-in capital		$ 16,121
Derivatives (gain) loss	$ (593)	10,804	$ 376
Derivative instruments, fair value	$ 1,314	1,907
Common Stock | Public Offering, May 2014
Class of Warrant or Right
Number of shares into which a warrant may be converted	1,750,156
Warrants
Class of Warrant or Right
Reclassification of derivative warrant liability to additional paid-in capital		16,121
Non-cash loss from modification of warrants	$ 593	(10,804)	(376)
Derivative instruments, fair value	1,314	1,907	7,224
Warrants | Other Income (Expense)
Class of Warrant or Right
Derivatives (gain) loss	$ (593)	$ 10,804	$ 376