Loans And The Allowance For Credit Losses (Impaired Loans By Class) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	$ 2,740	$ 2,511	$ 3,192
Unpaid Principal Balance	4,287		4,668
Related allowance	334	227	254
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	20		223
Unpaid Principal Balance	943		1,240
Related allowance	4		39
Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	2,132		2,380
Unpaid Principal Balance	2,480		2,654
Related allowance	270		215
Real Estate Loans – Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	581		588
Unpaid Principal Balance	812		658
Related allowance	60		0
Real Estate Loans – Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment			0
Unpaid Principal Balance			94
Related allowance			0
Installment and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	7		1
Unpaid Principal Balance	52		22
Related allowance	0		0
With No Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	7		1
Unpaid Principal Balance	52		22
Related allowance	0		0
With No Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	11		168
Unpaid Principal Balance	934		1,185
Related allowance	0		0
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	788		1,164
Unpaid Principal Balance	1,084		1,438
Related allowance	0		0
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	5		178
Unpaid Principal Balance	40		178
Related allowance	0		0
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	324		588
Unpaid Principal Balance	485		588
Related allowance	0		0
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	0		0
Unpaid Principal Balance	70		70
Related allowance	0		0
With No Related Allowance Recorded [Member] | Real Estate Loans – Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment			0
Unpaid Principal Balance			94
Related allowance			0
With Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	9		55
Unpaid Principal Balance	9		55
Related allowance	4		39
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	618		979
Unpaid Principal Balance	635		979
Related allowance	232		212
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	721		59
Unpaid Principal Balance	721		59
Related allowance	38		3
With Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	257
Unpaid Principal Balance	257
Related allowance	60
With Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment			0
Unpaid Principal Balance			0
Related allowance			$ 0