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		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	$ 2,288	$ 2,440	$ 2,655	$ 2,434
Interest Income Recognized: Total	31	46	87	51
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	571	78	545	90
Interest Income Recognized: Total	19	1	27	1
Real Estate Loans – Residential [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	1,430	1,831	1,858	1,857
Interest Income Recognized: Total	12	43	45	47
Real Estate Loans – Commercial [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	278	531	244	487
Interest Income Recognized: Total	0	2	15	3
Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	9	0	8	0
Interest Income Recognized: Total	0	0	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	292	54	199	62
Interest Income Recognized: With no related allowance recorded	19	1	27	1
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	562	747	701	782
Interest Income Recognized: With no related allowance recorded	11	16	44	20
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	142	443	105	321
Interest Income Recognized: With no related allowance recorded	1	27	1	27
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	107	531	71	433
Interest Income Recognized: With no related allowance recorded	0	2	15	3
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	0	0
Interest Income Recognized: With no related allowance recorded	0	0	0	0
With No Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With no related allowance recorded	0	0	2	0
Interest Income Recognized: With no related allowance recorded	0	0	0	0
With Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With related allowance recorded	279	24	346	28
Interest Income Recognized: With related allowance recorded	0	0	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	493	624	585	704
Interest Income Recognized: With related allowance recorded	0	0	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	233	17	467	50
Interest Income Recognized: With related allowance recorded	0	0	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	171	0	173	54
Interest Income Recognized: With related allowance recorded	0	0	0	0
With Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: With related allowance recorded	9		6
Interest Income Recognized: With related allowance recorded	$ 0		$ 0