INCOME TAXES (Schedule of 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 (benefit) provision for income taxes:
Federal	$ 0	$ 902	$ (366)
State	(32)	(721)	(71)
Total current (benefit) provision for income taxes	(32)	181	(437)
Deferred benefit for income taxes:
Federal	5,615	(16,129)	(56,871)
State	1,023	(7,392)	(13,974)
Total deferred benefit for income taxes	6,638	(23,521)	(70,845)
(Decrease) increase in deferred tax asset valuation allowance	(6,745)	12,686	75,396
(Benefit) provision for income taxes	$ (139)	$ (10,654)	$ 4,114