Derivative Financial Instruments (Schedule Of Effect Of Interest Rate Swaps On Consolidated Statement Of Operations) (Detail) (Interest Rate Swaps [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Other Comprehensive Loss on Derivative (Effective Portion)	$ (19,826)	$ (42,732)
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Reclassified from Accumulated Other Comprehensive Loss into Income Statement (Effective Portion)	(11,676)	(2,860)
Amount of Loss Recognized on Derivative (Ineffective Portion)