Loans And The Allowance For Credit Losses (Recorded Investment Of Loans, Including Nonaccrual And Restructured Loans, By Class) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 1,985	$ 76
60-89 Days Past Due	364	298
90 Days or More Past Due	420	542
Total Past Due	2,769	916
Current	1,168,968	1,165,317
Financing receivables, Totals	1,171,737	1,166,233
Greater Than 90 Days and Accruing	79	75
Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	4,993	5,655
Financing receivables, Totals	4,993	5,655
All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	231	895
Financing receivables, Totals	231	895
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	146
90 Days or More Past Due	19	20
Total Past Due	165	20
Current	190,675	172,790
Financing receivables, Totals	190,840	172,810
Municipal Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	93,176	94,007
Financing receivables, Totals	93,176	94,007
Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	482,775	489,706
Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	511	4
60-89 Days Past Due	133	294
90 Days or More Past Due	233	341
Total Past Due	877	639
Current	445,029	452,440
Financing receivables, Totals	445,906	453,079
Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	72
60-89 Days Past Due		4
90 Days or More Past Due	168	181
Total Past Due	240	185
Current	36,629	36,442
Financing receivables, Totals	36,869	36,627
Greater Than 90 Days and Accruing	79	75
Real Estate Loans – Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	372,155	371,319
Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	734
60-89 Days Past Due	231
Total Past Due	965
Current	224,967	224,416
Financing receivables, Totals	225,932	224,416
Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	522	72
Total Past Due	522	72
Current	145,701	146,831
Financing receivables, Totals	146,223	146,903
Real Estate Loans – Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	27,567	31,841
Real Estate Loans – Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,603	2,495
Financing receivables, Totals	2,603	2,495
Real Estate Loans – Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	24,964	29,346
Financing receivables, Totals	$ 24,964	$ 29,346