INCOME TAXES (Components of Income Tax Expense (Benefit)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:
Federal	$ (34,733)	$ (201)	$ (16,393)
Foreign	0	28,921	0
State	(805)	1,421	2,492
Current Income Tax Expense (Benefit)	(35,538)	30,141	(13,901)
Deferred:
Federal	202,552	56,482	121,111
State	6,423	2,512	2,560
Deferred Income Tax Expense (Benefit)	208,975	58,994	123,671
Total income tax	$ 173,437	$ 89,135	$ 109,770