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	Jun. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 191	$ 92
60-89 Days Past Due	17	43
90 Days or More Past Due	930	1,961
Total Past Due	1,138	2,096
Current	1,102,877	1,080,827
Financing receivables, Totals	1,104,015	1,082,923
Greater Than 90 Days and Accruing	75	0
Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	9	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	9	0
Current	5,658	4,701
Financing receivables, Totals	5,667	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	544	376
Financing receivables, Totals	544	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	6	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	6	0
Current	169,209	165,023
Financing receivables, Totals	169,215	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	45,319	84,689
Financing receivables, Totals	45,319	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	520,393	489,951
Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	5	92
60-89 Days Past Due	17	43
90 Days or More Past Due	658	950
Total Past Due	680	1,085
Current	483,904	449,956
Financing receivables, Totals	484,584	451,041
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	48	0
60-89 Days Past Due	0	0
90 Days or More Past Due	165	716
Total Past Due	213	716
Current	35,596	38,194
Financing receivables, Totals	35,809	38,910
Greater Than 90 Days and Accruing	75	0
Real Estate Loans – Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	331,064	327,622
Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	49	0
60-89 Days Past Due	0	0
90 Days or More Past Due	107	295
Total Past Due	156	295
Current	223,111	222,013
Financing receivables, Totals	223,267	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	107,797	105,314
Financing receivables, Totals	107,797	105,314
Greater Than 90 Days and Accruing	0	0
Real Estate Loans – Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables, Totals	31,813	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	1,828	1,559
Financing receivables, Totals	1,828	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	74	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	74	0
Current	29,911	9,002
Financing receivables, Totals	29,985	9,002
Greater Than 90 Days and Accruing	$ 0	$ 0