Loans And Allowance For Loan Losses (Interest Income Recognized on Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 1,427	$ 1,218
Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	1,008	760
Real Estate - Construction And Land [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	6	24
Real Estate - Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	151	113
Real Estate - Personal [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	35	111
Consumer [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	80	80
Revolving Home Equity [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	1	2
Consumer Credit Card [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 146	$ 128