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		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	$ 1,954	$ 2,900	$ 2,421	$ 2,590
Interest Income Recognized: Total	40	36	127	87
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	605	37	565	72
Interest Income Recognized: Total	15	0	42	1
Real Estate Loans – Residential [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	1,068	2,280	1,595	1,999
Interest Income Recognized: Total	25	34	70	81
Real Estate Loans – Commercial [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	275	581	254	518
Interest Income Recognized: Total	0	2	15	5
Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment: Total	6	2	7	1
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	272	24	223	49
Interest Income Recognized: With no related allowance recorded	15	0	42	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	463	888	622	818
Interest Income Recognized: With no related allowance recorded	24	27	68	47
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	188	331	133	325
Interest Income Recognized: With no related allowance recorded	1	7	2	34
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	350	83	405
Interest Income Recognized: With no related allowance recorded	0	2	15	5
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	2	1	1
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	333	13	342	23
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	399	580	523	662
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	18	481	317	194
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	168	231	171	113
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	6		6
Interest Income Recognized: With related allowance recorded	$ 0		$ 0