Loans And The Allowance For Credit Losses (Average Recorded Investment And Interest Income Recognized On Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	$ 3,022	$ 2,427
Interest Income Recognized: Total	56	22
Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	6	0
Interest Income Recognized: Total	0	0
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	521	100
Interest Income Recognized: Total	8	7
Real Estate Loans – Residential [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	2,285	1,884
Interest Income Recognized: Total	33	14
Real Estate Loans – Commercial [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	210	443
Interest Income Recognized: Total	15	1
With No Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With no related allowance recorded	3	0
Interest Income Recognized: With no related allowance recorded	0	0
With No Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With no related allowance recorded	107	70
Interest Income Recognized: With no related allowance recorded	8	7
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With no related allowance recorded	841	818
Interest Income Recognized: With no related allowance recorded	33	14
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With no related allowance recorded	67	199
Interest Income Recognized: With no related allowance recorded	0	0
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With no related allowance recorded	36	335
Interest Income Recognized: With no related allowance recorded	15	1
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With no related allowance recorded	0	0
Interest Income Recognized: With no related allowance recorded	0	0
With Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With related allowance recorded	3	0
Interest Income Recognized: With related allowance recorded	0	0
With Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With related allowance recorded	414	30
Interest Income Recognized: With related allowance recorded	0	0
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With related allowance recorded	677	783
Interest Income Recognized: With related allowance recorded	0	0
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With related allowance recorded	700	84
Interest Income Recognized: With related allowance recorded	0	0
With Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With related allowance recorded	174	108
Interest Income Recognized: With related allowance recorded	$ 0	$ 0