INCOME TAXES - Income tax provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ (631)	$ (3,436)
State	(62)	379
Total current income tax	(693)	(3,057)
Deferred:
Federal	600	7,925
State	12	1,119
Increase in valuation allowance	(261)	(6,975)
Total deferred income tax	351	2,069
Total income tax provision, amount	$ (342)	$ (988)