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Summary Of Significant Accounting Policies (Summary Of Changes In Mortgage Service Rights) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Summary Of Significant Accounting Policies [Abstract]    
Balance at beginning of year $ 925 $ 672
Originations of mortgage servicing rights 277 386
Amortization expense (220) (133)
Valuation allowance (17) 0
Balance at end of year $ 965 $ 925