Hedging Activities And Fair Value Measurements (Schedule Of Gains And Losses On Derivatives Designated As Cash Flow Hedges) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Hedging Activities And Fair Value Measurements [Abstract]
Gain or (loss) recognized in AOCI on derivatives (effective portion)	$ (209)	[1]	$ (282)	[1]
Gain or (loss) reclassified from AOCI into income (effective portion)	(283)	[1]	122	[1]
Gain or (loss) recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)		[1]		[1]

[1] Losses on derivatives reclassified from accumulated other comprehensive income ("AOCI") into income (effective portion) were included in "Interest expense" in the Condensed Consolidated Statements of Operations.