Income Taxes (Summary Of Differences Between Income Taxes At The Federal Statutory And Effective Tax Rate) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Taxes [Abstract]
Statutory tax rate	21.00%	34.00%	21.00%	34.00%
Increase (decrease) resulting from:
Restricted stock	(1.60%)	0.00%	(0.90%)	0.00%
Tax exempt income on bank owned life insurance	(0.60%)	(1.10%)	(0.60%)	(1.40%)
Low income housing credits	(0.60%)	(0.00%)	(0.60%)	(0.00%)
Other, net	0.20%	(0.30%)	0.20%	0.40%
Effective tax rate	18.40%	32.60%	19.10%	33.00%