Commitments And Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Commercial Commitments To Extend Credit [Member]
Loss Contingencies [Line Items]
Commitments outstanding	$ 227,380	$ 218,192
Consumer Commitments To Extend Credit (Secured) [Member]
Loss Contingencies [Line Items]
Commitments outstanding	44,352	41,604
Consumer Commitments To Extend Credit (Unsecured) [Member]
Loss Contingencies [Line Items]
Commitments outstanding	5,674	5,653
Commitments To Extend Credit [Member]
Loss Contingencies [Line Items]
Commitments outstanding	277,406	265,449
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Commitments outstanding	$ 23,935	$ 25,944
Standby letters of credit extension period, in years	1 year