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Loans (Narrative) (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Financing Receivable, Modifications [Line Items]    
Weighted Average Risk Rating, Commercial Loans 4.81 4.87
Financing Receivable, Modifications, Recorded Investment $ 20,700,000 $ 19,700,000
Accrued Interest 51,000 46,000
Related Allowance on Loans Individually Evaluated for Impairment 2,023,000 1,815,000
Loan Receivable, Troubled Debt Restructurings [Member]
   
Financing Receivable, Modifications [Line Items]    
Related Allowance on Loans Individually Evaluated for Impairment $ 1,100,000 $ 858,000