Derivative Financial Instruments (Schedule Of Gains And Losses Related To Derivative Instruments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Gain or (Loss) on Derivatives  Recognized in OCI	$ 0	$ 2,403	$ (437)
Derivatives in cash flow hedging relationships | Interest expense
Derivative [Line Items]
Gain or (Loss) Reclassified from Accumulated OCI into Earnings	0	2,430
Derivatives in cash flow hedging relationships | Interest rate swap contracts
Derivative [Line Items]
Gain or (Loss) on Derivatives  Recognized in OCI	$ 0	$ (27)