Loans And Allowance For Loan Losses (Schedule Of Loans With Credit Quality Indicators) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 423,377	$ 404,574
Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	378,436	355,721
Other Assets Especially Mentioned [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	29,082	30,131
Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	15,626	18,489
Doubtful [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	233	233
Loss [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total
Commercial Real Estate Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	302,066	285,484
Commercial Real Estate Mortgages [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	274,744	255,945
Commercial Real Estate Mortgages [Member] | Other Assets Especially Mentioned [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	18,836	19,787
Commercial Real Estate Mortgages [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	8,486	9,752
Commercial Real Estate Mortgages [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	69,999	62,450
Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	59,791	50,866
Commercial And Industrial [Member] | Other Assets Especially Mentioned [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	7,432	7,183
Commercial And Industrial [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	2,776	4,401
Commercial And Industrial [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total
Commercial Construction And Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	25,106	30,060
Commercial Construction And Land Development [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	18,992	23,615
Commercial Construction And Land Development [Member] | Other Assets Especially Mentioned [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	2,361	2,692
Commercial Construction And Land Development [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	3,520	3,520
Commercial Construction And Land Development [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	233	233
Commercial Construction And Land Development [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total
Agriculture And Other Loans To Farmers [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	26,206	26,580
Agriculture And Other Loans To Farmers [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	24,909	25,295
Agriculture And Other Loans To Farmers [Member] | Other Assets Especially Mentioned [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	453	469
Agriculture And Other Loans To Farmers [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	844	816
Agriculture And Other Loans To Farmers [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total