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Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings [Line Items]    
Troubled debt restructurings $ 29,231 $ 33,278
Loans, Gross [Member] | Performing Financing Receivable [Member]
    
Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings [Line Items]    
Troubled debt restructurings 26,747 30,154
Loans, Gross [Member] | Nonperforming Financing Receivable [Member]
    
Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings [Line Items]    
Troubled debt restructurings 2,484 3,124
Loans, Gross [Member]
    
Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings [Line Items]    
Troubled debt restructurings 29,231 33,278
Other Loans Held For Sale [Member] | Performing Financing Receivable [Member]
    
Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings [Line Items]    
Troubled debt restructurings 0 0
Other Loans Held For Sale [Member] | Nonperforming Financing Receivable [Member]
    
Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings [Line Items]    
Troubled debt restructurings 0 0
Other Loans Held For Sale [Member]
    
Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings [Line Items]    
Troubled debt restructurings 0 0
Performing Financing Receivable [Member]
    
Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings [Line Items]    
Troubled debt restructurings 26,747 30,154
Nonperforming Financing Receivable [Member]
    
Note 4 - Loans (Details) - Carrying Balance of Troubled Debt Restructurings [Line Items]    
Troubled debt restructurings $ 2,484 $ 3,124