Loans (Narrative) (Details) (USD $)
6 Months Ended
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Jun. 30, 2012
Performing Financing Receivable [Member]
Dec. 31, 2011
Performing Financing Receivable [Member]
Jun. 30, 2012
Maximum [Member]
Jun. 30, 2012
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Loans held-for-sale $ 200,000   $ 1,800,000        
Troubled debt restructurings 4,300,000   7,100,000        
Specific reserves allocated to TDRs 300,000   950,000        
Troubled debt restructuring loans, nonaccrual status 4,300,000   6,000,000        
Troubled debt restructuring loans, accrual status 30,000   1,100,000        
Troubled debt restructurings, addition   900,000          
Modifications of the loan, involving a reduction of the stated interest rate, period           16 months 6 months
Impaired loans $ 61,665,000   $ 73,299,000 $ 22,300,000 $ 28,600,000