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Fair Value (Amount Of Gains And Losses From Changes In Fair Value Included In Earnings) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Fair Value [Abstract]    
Interest income $ 669 $ 68
Interest expense
Change in fair value 373 (7)
Total change in fair value $ 1,042 $ 61