ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Statement Of Income And Comprehensive Income Abstract
Accumulated other comprehensive income (loss) beginning balance	$ 0	$ 858	$ 0	$ (7,277)	$ (7,277)
Derivative Instrument and Hedging Activities [Line Items]
Prior period correction recorded in the current period	0	0	0	5,998
Net (gain) loss on derivative instruments	0	1,679	0	5,129
Income (taxes) benefit	0	(640)	0	(1,953)
Net gain (loss) on derivatives, net of taxes and before valuation allowance	0	1,039	0	9,174
Valuation allowance - (decrease) increase	0	0	0	0
Net gain (loss), net of taxes	0	1,039	0	9,174	7,277
Accumulated other comprehensive income (loss) ending balance	$ 0	$ 1,897	$ 0	$ 1,897	$ 0