Loans And The Allowance For Credit Losses (Impaired Loans By Class) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	$ 3,130	$ 2,511	$ 3,444
Unpaid Principal Balance	4,742		5,010
Related allowance	204	227	209
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	69		428
Unpaid Principal Balance	1,031		1,491
Related allowance	3		130
Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	2,479		2,199
Unpaid Principal Balance	2,759		2,441
Related allowance	201		79
Real Estate Loans – Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	582		656
Unpaid Principal Balance	813		726
Related allowance	0		0
Real Estate Loans – Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	0		158
Unpaid Principal Balance	94		325
Related allowance	0		0
Installment and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	0		3
Unpaid Principal Balance	45		27
Related allowance	0		0
With No Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	0		3
Unpaid Principal Balance	45		27
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	49		133
Unpaid Principal Balance	998		1,196
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	1,017		1,131
Unpaid Principal Balance	1,281		1,373
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	904		328
Unpaid Principal Balance	906		328
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	582		475
Unpaid Principal Balance	743		475
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		181
Unpaid Principal Balance	70		251
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		158
Unpaid Principal Balance	94		325
Related allowance	0		0
With Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	20		295
Unpaid Principal Balance	33		295
Related allowance	3		130
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	558		681
Unpaid Principal Balance	572		681
Related allowance	201		76
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	0		59
Unpaid Principal Balance	0		59
Related allowance	0		3
With Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	0
Unpaid Principal Balance	0
Related allowance	0
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