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Derivative Financial Instruments (Impact Of Derivative Financial Instruments) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Interest Rate Contract [Member] | Cash Flow Hedging [Member]        
Derivative [Line Items]        
Amount of gain (loss) recognized in OCI on derivative (effective portion) $ (34) $ (81) $ 371 $ (1,044)