Derivative Financial Instruments (Schedule Of Gains And Losses Related To Derivative Instruments) (Details) - Cash Flow Hedging [Member] - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2016		Sep. 30, 2015		Sep. 30, 2016		Sep. 30, 2015
Interest Expense [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ (146)	[1]	$ (654)	[1]	$ (478)	[2]	$ (2,493)	[2]
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	$ 750		$ (126)		$ (1,925)		$ (595)

[1] There were no gains or losses recognized in earnings related to any ineffective portion of hedging relationships or related to any amount excluded from the assessment of hedge effectiveness for the three months ended September 30, 2016 and 2015.

[2] There were no gains or losses recognized in earnings related to any ineffective portion of hedging relationships or related to any amount excluded from the assessment of hedge effectiveness for the nine months ended September 30, 2016 and 2015.