Loans And Allowance For Loan Losses (Interest Income Recognized on Impaired Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized on impaired loans	$ 3,995	$ 5,082	$ 2,481
Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized on impaired loans	2,219	3,135	1,064
Real Estate - Construction And Land [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized on impaired loans	25	41	2
Real Estate - Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized on impaired loans	558	514	171
Real Estate - Personal [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized on impaired loans	139	402	152
Consumer [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized on impaired loans	305	307	339
Revolving Home Equity [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized on impaired loans	3	10	31
Consumer Credit Card [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized on impaired loans	$ 746	$ 673	$ 722