Loans And Allowance For Loan Losses (Interest Income Recognized on Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 1,218	$ 586
Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	760	263
Real Estate - Construction And Land [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	24	1
Real Estate - Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	113	62
Real Estate - Personal [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	111	37
Consumer [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	80	82
Revolving Home Equity [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	2	6
Consumer Credit Card [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 128	$ 135