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	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 71	$ 76
60-89 Days Past Due	104	298
90 Days or More Past Due	255	542
Total Past Due	430	916
Current	1,156,233	1,165,317
Financing receivables, Totals	1,156,663	1,166,233
Greater Than 90 Days and Accruing		75
Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	4,793	5,655
Financing receivables, Totals	4,793	5,655
All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	286	895
Financing receivables, Totals	286	895
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	43
60-89 Days Past Due	95
90 Days or More Past Due		20
Total Past Due	138	20
Current	182,931	172,790
Financing receivables, Totals	183,069	172,810
Municipal Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	96,258	94,007
Financing receivables, Totals	96,258	94,007
Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	472,986	489,706
Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		4
60-89 Days Past Due	9	294
90 Days or More Past Due	176	341
Total Past Due	185	639
Current	434,722	452,440
Financing receivables, Totals	434,907	453,079
Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	28
60-89 Days Past Due		4
90 Days or More Past Due	79	181
Total Past Due	107	185
Current	37,972	36,442
Financing receivables, Totals	38,079	36,627
Greater Than 90 Days and Accruing		75
Real Estate Loans – Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	381,301	371,319
Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	241,480	224,416
Financing receivables, Totals	241,480	224,416
Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		72
Total Past Due		72
Current	139,821	146,831
Financing receivables, Totals	139,821	146,903
Real Estate Loans – Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	17,970	31,841
Real Estate Loans – Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,374	2,495
Financing receivables, Totals	3,374	2,495
Real Estate Loans – Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	14,596	29,346
Financing receivables, Totals	$ 14,596	$ 29,346