Derivative Financial Instruments (Schedule Of Gains And Losses Related To Derivative Instruments) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Unrealized (loss) gain on interest rate swaps		$ (356)	$ (35)	$ 22
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		370
Cash Flow Hedging [Member] | Interest Expense [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[1]	0	600
Cash Flow Hedging [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Unrealized (loss) gain on interest rate swaps		$ (356)	$ 565

[1] There were no gains or losses recognized in earnings related to any ineffective portion of the hedging relationship or related to any amount excluded from the assessment of hedge effectiveness for the years ended December 31, 2018 and 2017.