INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Federal
Current	$ (16,509)	$ 7,974	$ (9,018)
Deferred	44,730	15,667	37,196
Total	28,221	23,641	28,178
State
Current	(1,852)	(2,867)	(5,246)
Deferred	1,603	(305)	(1,480)
Total	(249)	(3,172)	(6,726)
Total income tax expense
Current	(18,361)	5,107	(14,264)
Deferred	46,333	15,362	35,716
Total	$ 27,972	$ 20,469	$ 21,452