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Income Taxes (Summary Of Differences Between Income Taxes At The Federal Statutory And Effective Tax Rate) (Details)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Income Taxes [Abstract]    
Statutory tax rate 21.00% 21.00%
Increase (decrease) resulting from:    
Restricted stock (0.10%) 0.00%
Tax exempt income on bank owned life insurance (0.30%) (0.70%)
Low income housing credits (0.70%) (1.00%)
Other, net 0.10% (0.20%)
Effective tax rate 20.00% 19.10%