STOCK-BASED COMPENSATION Defined contribution plan and non-cash employer-matching contributions (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Defined contribution pan, maximum annual contribution per employee percent	15.00%
Defined contribution plan, employer matching contribution percent	3.00%
Expense recognized for the 401(k) plan	$ 193	$ 385	$ 483
Number of shares of the Company's common stock issued (in thousands)	116	118	0
Market value per share of the Company's common stock on contribution date (in dollars)	$ 2.71	$ 3.65	$ 0.00
Non-cash contribution made for employer matching liability	$ 314	$ 430	$ 0
Additional cash contribution made for employer-matching liability	0	0	651
Total contribution made for employer-matching liability	$ 314	$ 430	$ 651