INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Federal
Current	$ 0	$ 0	$ 130
Deferred	15,995	35,881	26,603
Total	15,995	35,881	26,733
State
Current	3	3	2
Deferred	(126)	943	81
Total	(123)	946	83
Total income tax expense
Current	3	3	132
Deferred	15,869	36,824	26,684
Total income tax	$ 15,872	$ 36,827	$ 26,816