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, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 365	$ 92
60-89 Days Past Due	501	43
90 Days or More Past Due	1,016	1,961
Total Past Due	1,882	2,096
Current	1,163,619	1,080,827
Financing receivables, Totals	1,165,501	1,082,923
Greater Than 90 Days and Accruing	83	0
Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	0	0
Current	5,898	4,701
Financing receivables, Totals	5,898	4,701
Greater Than 90 Days and Accruing	0	0
All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	0	0
Current	454	376
Financing receivables, Totals	454	376
Greater Than 90 Days and Accruing	0	0
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	133	0
60-89 Days Past Due	65	0
90 Days or More Past Due	8	0
Total Past Due	206	0
Current	162,932	165,023
Financing receivables, Totals	163,138	165,023
Greater Than 90 Days and Accruing	0	0
Municipal Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	0	0
Current	96,491	84,689
Financing receivables, Totals	96,491	84,689
Greater Than 90 Days and Accruing	0	0
Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	493,667	460,395
Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	9	92
60-89 Days Past Due	436	43
90 Days or More Past Due	702	950
Total Past Due	1,147	1,085
Current	457,430	420,400
Financing receivables, Totals	458,577	421,485
Greater Than 90 Days and Accruing	0	0
Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	65	0
60-89 Days Past Due	0	0
90 Days or More Past Due	199	716
Total Past Due	264	716
Current	34,826	38,194
Financing receivables, Totals	35,090	38,910
Greater Than 90 Days and Accruing	83	0
Real Estate Loans – Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	373,085	357,178
Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	158	0
60-89 Days Past Due	0	0
90 Days or More Past Due	107	295
Total Past Due	265	295
Current	217,091	222,013
Financing receivables, Totals	217,356	222,308
Greater Than 90 Days and Accruing	0	0
Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	0	0
Current	155,729	134,870
Financing receivables, Totals	155,729	134,870
Greater Than 90 Days and Accruing	0	0
Real Estate Loans – Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	32,768	10,561
Real Estate Loans – Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	0	0
Current	2,223	1,559
Financing receivables, Totals	2,223	1,559
Greater Than 90 Days and Accruing	0	0
Real Estate Loans – Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	0	0
Current	30,545	9,002
Financing receivables, Totals	30,545	9,002
Greater Than 90 Days and Accruing	$ 0	$ 0