Loans And The Allowance For Credit Losses (Nonaccrual Loans By Class) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	$ 2,876	$ 2,355
Total nonaccrual loans including TDRs	3,239	2,729
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	719	225
Nonaccruing TDR's	5	8
Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	1,170	1,119
Nonaccruing TDR's	184	189
Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	871	716
Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	107	295
Nonaccruing TDR's	174	177
Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	0	0
Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	$ 9	$ 0