Derivative Financial Instruments (Schedule of Gains and Losses Related to Derivative Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative [Line Items]
Gain or (Loss) on Derivatives  Recognized in OCI	$ 620	$ 615	$ 1,828	$ (1,041)
Cash Flow Hedging | Interest expense
Derivative [Line Items]
Gain or (Loss) Reclassified  from Accumulated OCI  into Earnings	630	606	1,855	1,360
Cash Flow Hedging | Interest rate swap contracts
Derivative [Line Items]
Gain or (Loss) on Derivatives  Recognized in OCI	$ (10)	$ 9	$ (27)	$ (2,401)