ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Reclassifications out of accumulated other comprehensive income (loss)
Tax (expense) or benefit	$ (2,479)	$ (3,784)
Net loss	(23,170)	(111,522)
Gains and losses on cash flow hedges | Interest rate swap contracts | Amounts reclassified from Accumulated Other Comprehensive Income (Loss)
Reclassifications out of accumulated other comprehensive income (loss)
Interest income/(expense)	(449)
Tax (expense) or benefit	(70)
Net loss	$ (519)