Loan Quality (Troubled Debt Restructing Loans) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Total Number of Contracts	19	11
Total Recorded Investment	$ 9,660	$ 8,116
Residential Real Estate - Construction [Member]
Financing Receivable, Modifications [Line Items]
Total Number of Contracts	3
Total Recorded Investment	1,510
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total Number of Contracts	4	2
Total Recorded Investment	476	93
Commercial, industrial and agricultural [Member]
Financing Receivable, Modifications [Line Items]
Total Number of Contracts	2
Total Recorded Investment	1,818
Commercial, industrial and agricultural real estate [Member]
Financing Receivable, Modifications [Line Items]
Total Number of Contracts	10	9
Total Recorded Investment	$ 5,856	$ 8,023