Loans And Allowance For Loan Losses (Schedule Of Past Due Loans) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	$ 3,131	$ 3,199
60-89 Days Past Due	2,325	1,177
90 Days or Greater	4,689	7,182
Total Past Due	10,145	11,558
Current	842,985	804,001
Total loans	853,130	815,559
Non-Accrual	8,840	9,632
Greater than 90 Days Past Due and Accruing		235
Commercial Real Estate Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	786	228
60-89 Days Past Due	361	238
90 Days or Greater	698	1,041
Total Past Due	1,845	1,507
Current	334,697	322,986
Total loans	336,542	324,493
Non-Accrual	2,046	1,888
Greater than 90 Days Past Due and Accruing
Commercial and Industrial Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	29	22
60-89 Days Past Due	20	61
90 Days or Greater	456	990
Total Past Due	505	1,073
Current	73,467	58,300
Total loans	73,972	59,373
Non-Accrual	793	818
Greater than 90 Days Past Due and Accruing		216
Commercial Construction And Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
90 Days or Greater	1,845	2,359
Total Past Due	1,845	2,359
Current	16,284	19,761
Total loans	18,129	22,120
Non-Accrual	1,913	2,359
Greater than 90 Days Past Due and Accruing
Agricultural and Other Loans to Farmers [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	22	203
60-89 Days Past Due		12
90 Days or Greater		490
Total Past Due	22	705
Current	26,907	24,217
Total loans	26,929	24,922
Non-Accrual	56	664
Greater than 90 Days Past Due and Accruing
Residential Real Estate Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	2,170	2,452
60-89 Days Past Due	1,864	769
90 Days or Greater	1,649	1,951
Total Past Due	5,683	5,172
Current	311,432	291,931
Total loans	317,115	297,103
Non-Accrual	3,227	3,017
Greater than 90 Days Past Due and Accruing
Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	67	219
90 Days or Greater		274
Total Past Due	67	493
Current	49,498	52,810
Total loans	49,565	53,303
Non-Accrual	745	814
Greater than 90 Days Past Due and Accruing
Other Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
30-59 Days Past Due	57	75
60-89 Days Past Due	80	97
90 Days or Greater	41	77
Total Past Due	178	249
Current	14,345	18,752
Total loans	14,523	19,001
Non-Accrual	60	72
Greater than 90 Days Past Due and Accruing		19
Tax Exempt Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Current	16,355	15,244
Total loans	16,355	15,244
Greater than 90 Days Past Due and Accruing