INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Federal
Current	$ (9,018)	$ 7,413	$ 4,027
Deferred	37,196	12,982	15,730
Total	28,178	20,395	19,757
State
Current	(5,246)	2,629	3,020
Deferred	(1,480)	142	1,779
Total	(6,726)	2,771	4,799
Total income tax expense
Current	(14,264)	10,042	7,047
Deferred	35,716	13,124	17,509
Total	$ 21,452	$ 23,166	$ 24,556