Loans And Allowance For Loan Losses (Schedule Of Past Due Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 6,065	$ 6,276
Current	998,762	983,693
Total Loans	1,004,827	989,969
Non-Accrual	6,308	6,980
Greater Than 90 Days Past Due and Accruing	1	28
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,940	1,744
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,091	810
90 Days Or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,034	3,722
Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	596	627
Current	392,923	370,375
Total Loans	393,519	371,002
Non-Accrual	$ 982	1,279
Greater Than 90 Days Past Due and Accruing		0
Commercial Real Estate Mortgages [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 191	99
Commercial Real Estate Mortgages [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	151	287
Commercial Real Estate Mortgages [Member] | 90 Days Or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	254	241
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	264	281
Current	78,376	79,630
Total Loans	78,640	79,911
Non-Accrual	190	292
Greater Than 90 Days Past Due and Accruing	1	0
Commercial And Industrial [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	74	9
Commercial And Industrial [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	20	1
Commercial And Industrial [Member] | 90 Days Or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	170	271
Commercial Construction And Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,111	1,111
Current	24,084	23,815
Total Loans	25,195	24,926
Non-Accrual	$ 1,111	1,111
Greater Than 90 Days Past Due and Accruing		0
Commercial Construction And Land Development [Member] | 90 Days Or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,111	1,111
Agriculture And Other Loans To Farmers [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	149	85
Current	31,938	30,918
Total Loans	$ 32,087	31,003
Non-Accrual		16
Greater Than 90 Days Past Due and Accruing		3
Agriculture And Other Loans To Farmers [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		12
Agriculture And Other Loans To Farmers [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 149	70
Agriculture And Other Loans To Farmers [Member] | 90 Days Or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		3
Residential Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,627	3,064
Current	398,764	403,588
Total Loans	402,391	406,652
Non-Accrual	$ 3,734	3,452
Greater Than 90 Days Past Due and Accruing		25
Residential Real Estate Mortgages [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,586	1,313
Residential Real Estate Mortgages [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	729	452
Residential Real Estate Mortgages [Member] | 90 Days Or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,312	1,299
Home Equity Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	267	1,042
Current	49,301	50,488
Total Loans	49,568	51,530
Non-Accrual	$ 282	820
Greater Than 90 Days Past Due and Accruing		0
Home Equity Loans [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 41	245
Home Equity Loans [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	40
Home Equity Loans [Member] | 90 Days Or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	186	797
Other Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	51	66
Current	7,342	9,632
Total Loans	7,393	9,698
Non-Accrual	$ 9	10
Greater Than 90 Days Past Due and Accruing		0
Other Consumer Loans [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 48	66
Other Consumer Loans [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2
Other Consumer Loans [Member] | 90 Days Or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1
Tax Exempt [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	16,034	15,244
Total Loans	$ 16,034	15,244
Greater Than 90 Days Past Due and Accruing		$ 0