Loans And Allowance For Loan Losses (Schedule Of Past Due Loans) (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	$ 3,033	$ 3,199
60-89 Days Past Due	2,227	1,177
90 Days or Greater	5,927	7,182
Total Past Due	11,187	11,558
Current	841,716	804,001
Total loans	852,903	815,559
Non-Accrual	8,171	9,632
Greater than 90 Days Past Due and Accruing	297	235
Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,279	228
60-89 Days Past Due	309	238
90 Days or Greater	863	1,041
Total Past Due	2,451	1,507
Current	325,560	322,986
Total loans	328,011	324,493
Non-Accrual	1,723	1,888
Greater than 90 Days Past Due and Accruing
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	165	22
60-89 Days Past Due	70	61
90 Days or Greater	421	990
Total Past Due	656	1,073
Current	80,218	58,300
Total loans	80,874	59,373
Non-Accrual	459	818
Greater than 90 Days Past Due and Accruing		216
Commercial Construction And Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days or Greater	2,029	2,359
Total Past Due	2,029	2,359
Current	14,536	19,761
Total loans	16,565	22,120
Non-Accrual	2,029	2,359
Greater than 90 Days Past Due and Accruing
Agriculture And Other Loans To Farmers [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	41	203
60-89 Days Past Due	83	12
90 Days or Greater	278	490
Total Past Due	402	705
Current	28,208	24,217
Total loans	28,610	24,922
Non-Accrual	151	664
Greater than 90 Days Past Due and Accruing	198
Residential Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,345	2,452
60-89 Days Past Due	1,078	769
90 Days or Greater	2,064	1,951
Total Past Due	4,487	5,172
Current	309,489	291,931
Total loans	313,976	297,103
Non-Accrual	3,001	3,017
Greater than 90 Days Past Due and Accruing	99
Home Equity Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	102	219
60-89 Days Past Due	641
90 Days or Greater	248	274
Total Past Due	991	493
Current	51,178	52,810
Total loans	52,169	53,303
Non-Accrual	772	814
Greater than 90 Days Past Due and Accruing
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	101	75
60-89 Days Past Due	46	97
90 Days or Greater	24	77
Total Past Due	171	249
Current	16,648	18,752
Total loans	16,819	19,001
Non-Accrual	36	72
Greater than 90 Days Past Due and Accruing		19
Tax Exempt [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	15,879	15,244
Total loans	15,879	15,244
Greater than 90 Days Past Due and Accruing