INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Federal
Current	$ 9,591	$ (16,509)	$ 7,974
Deferred	15,374	44,730	15,667
Total	24,965	28,221	23,641
State
Current	1,706	(1,852)	(2,867)
Deferred	(1,382)	1,603	(305)
Total	324	(249)	(3,172)
Total income tax expense
Current	11,297	(18,361)	5,107
Deferred	13,992	46,333	15,362
Total income tax	$ 25,289	$ 27,972	$ 20,469