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
Income Tax Disclosure [Abstract]
Current	$ 10,759	$ 0	$ 3,025
Deferred	841	(3,322)	(21,183)
Increase (decrease) in valuation allowance	(36,385)	3,322	36,171
Provision for (benefit from) income taxes	$ (24,785)	$ 0	$ 18,013