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Derivative Financial Instruments (Classification Of Gains And Losses On Interest Rate Derivative Contracts Designated As Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Derivative Financial Instruments [Abstract]
Amount of loss recognized in OCI on derivatives (effective portion)	$ 575
Amount of loss reclassified from accumulated OCI into income as "Derivative interest expense" (effective portion)	$ (2,545)	$ (4,680)

- Definition

The effective portion of loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References+ Details

- Definition

The effective portion of losses on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References+ Details