Loans And Allowance For Loan Losses (Interest Income Recognized on Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 953	$ 630	$ 2,855	$ 1,892
Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	473	277	1,418	830
Real Estate - Construction And Land [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	10	2	30	7
Real Estate - Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	118	42	354	126
Real Estate - Personal [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	104	39	311	118
Consumer [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	79	89	236	267
Revolving Home Equity [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	7	7	20	22
Consumer Credit Card [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 162	$ 174	$ 486	$ 522