Loans And Allowance For Loan Losses (Summary Of Troubled Debt Restructures) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012 loan	Sep. 30, 2012 loan
Financing Receivable, Modifications [Line Items]
Number of Loans	0	3
Pre-Modification Outstanding Recorded Investment		$ 123
Post-Modification Outstanding Recorded Investment		123
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	2
Pre-Modification Outstanding Recorded Investment		67
Post-Modification Outstanding Recorded Investment		67
Commercial Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	2
Pre-Modification Outstanding Recorded Investment		67
Post-Modification Outstanding Recorded Investment		67
Residential Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	1
Pre-Modification Outstanding Recorded Investment		56
Post-Modification Outstanding Recorded Investment		56
Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	1
Pre-Modification Outstanding Recorded Investment		56
Post-Modification Outstanding Recorded Investment		$ 56