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Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer [Line Items]    
Loans $ 1,004,766 $ 1,004,995
Consumer Secured [Member] | Performing Financing Receivable [Member]
    
Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer [Line Items]    
Loans 10,067 11,723
Consumer Secured [Member] | Nonperforming Financing Receivable [Member]
    
Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer [Line Items]    
Loans 4 9
Consumer Secured [Member] | Total [Member]
    
Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer [Line Items]    
Loans 10,071 11,732
Consumer Secured [Member]
    
Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer [Line Items]    
Loans 10,071 11,732
Consumer Unsecured [Member] | Performing Financing Receivable [Member]
    
Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer [Line Items]    
Loans 6,212 6,382
Consumer Unsecured [Member] | Nonperforming Financing Receivable [Member]
    
Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer [Line Items]    
Loans 39 133
Consumer Unsecured [Member] | Total [Member]
    
Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer [Line Items]    
Loans 6,251 6,515
Consumer Unsecured [Member]
    
Note 8 - Loans and Allowance for Loan Losses (Details) - Risk Category of Loans by Class-Consumer [Line Items]    
Loans $ 6,251 $ 6,515