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Derivative Financial Instruments (Impact Of Derivative Financial Instruments) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Interest Rate Contract [Member] | Cash Flow Hedging [Member]    
Derivative [Line Items]    
Amount of gain or (loss) recognized in OCI on derivative (effective portion) $ (858) $ 191