Loans And Allowance For Loan Losses (Schedule Of Loans With Credit Quality Indicators) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	$ 428,719	$ 404,574
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	379,551	355,721
Other Assets Especially Mentioned [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	33,339	30,131
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	15,829	18,489
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan		233
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan
Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	298,784	285,484
Commercial Real Estate Mortgages [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	268,904	255,945
Commercial Real Estate Mortgages [Member] | Other Assets Especially Mentioned [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	20,497	19,787
Commercial Real Estate Mortgages [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	9,383	9,752
Commercial Real Estate Mortgages [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	78,623	62,450
Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	65,401	50,866
Commercial And Industrial [Member] | Other Assets Especially Mentioned [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	10,123	7,183
Commercial And Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	3,099	4,401
Commercial And Industrial [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan
Commercial Construction And Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	25,106	30,060
Commercial Construction And Land Development [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	20,118	23,615
Commercial Construction And Land Development [Member] | Other Assets Especially Mentioned [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	2,389	2,692
Commercial Construction And Land Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	2,599	3,520
Commercial Construction And Land Development [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan		233
Commercial Construction And Land Development [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan
Agriculture And Other Loans To Farmers [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	26,206	26,580
Agriculture And Other Loans To Farmers [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	25,128	25,295
Agriculture And Other Loans To Farmers [Member] | Other Assets Especially Mentioned [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	330	469
Agriculture And Other Loans To Farmers [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan	748	816
Agriculture And Other Loans To Farmers [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial loan