ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reclassifications out of accumulated other comprehensive income (loss)
Provision for income taxes	$ (5,172)	$ (2,618)	$ (21,012)	$ (7,703)
Net income (loss)	7,433	(50,192)	(92,233)	(126,724)
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 (expense)	76		(831)
Provision for income taxes	(70)		(210)
Net income (loss)	$ 6		$ (1,041)