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Troubled Debt Restructurings (Loans By Class Of Financing Receivable Modified As TDRs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 contract	Dec. 31, 2011 contract
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	3	11
Troubled Debt Restructurings Within Previous Twelve Months [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	6	9
Recorded Investment	1,112	3,206
Commercial Real Estate Owner Occupied [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	1
Commercial Real Estate Owner Occupied [Member] \| Troubled Debt Restructurings Within Previous Twelve Months [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	1	2
Recorded Investment	162	613
Commercial Real Estate Non-Owner Occupied [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts		2
Commercial Real Estate Non-Owner Occupied [Member] \| Troubled Debt Restructurings Within Previous Twelve Months [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts		1
Recorded Investment		898
Construction And Farmland Commercial [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	1	1
Recorded Investment	87
Construction And Farmland Commercial [Member] \| Troubled Debt Restructurings Within Previous Twelve Months [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts		1
Recorded Investment		99
Residential Single Family [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	1	8
Residential Single Family [Member] \| Troubled Debt Restructurings Within Previous Twelve Months [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	4	5
Recorded Investment	863	1,596