Commitments And Contingencies (Outstanding Commitments )(Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Commercial Commitments To Extend Credit [Member]
Loss Contingencies [Line Items]
Commitments outstanding	$ 249,526	$ 227,380
Consumer Commitments To Extend Credit (Secured) [Member]
Loss Contingencies [Line Items]
Commitments outstanding	44,866	44,352
Consumer Commitments To Extend Credit (Unsecured) [Member]
Loss Contingencies [Line Items]
Commitments outstanding	5,668	5,674
Commitments To Extend Credit [Member]
Loss Contingencies [Line Items]
Commitments outstanding	300,060	277,406
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Commitments outstanding	$ 28,630	$ 23,935