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Investments (Composition Of Net Realized Securities Gains) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Investments [Abstract]    
Proceeds $ 18,781 $ 4,115
Gross gains realized 285 67
Gross losses realized (29) (11)
Net gains realized 256 56
Tax (provision) benefit on net gains (losses) realized $ 54 $ 12