Derivative And Hedging Instruments (Schedule Of Effect Of Derivative Instruments Designated As Hedging Instruments In Consolidated Financial Statements) (Details) (Designated as Hedging Instrument [Member], Interest Rate Swap [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) / Gain Recognized in OCI on Derivative (Effective Portion)	$ 0	$ 0	$ 0	$ (16)
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) / Gain Reclassified from Accumulated OCI into Income (Effective Portion)	$ 0	$ (49)	$ 0	$ (192)