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Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans $ 46,574 $ 42,095
Loans, Gross [Member] | Performing Troubled Debt Restructured Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans 26,747 30,154
Loans, Gross [Member] | Non Performing Troubled Debt Restructured Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans 2,484 3,124
Loans, Gross [Member] | Non Performing Other Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans 6,750 2,628
Loans, Gross [Member] | Performing Other Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans 10,593 5,413
Loans, Gross [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans 46,574 41,319
Other Loans Held For Sale [Member] | Performing Troubled Debt Restructured Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans   0
Other Loans Held For Sale [Member] | Non Performing Troubled Debt Restructured Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans   0
Other Loans Held For Sale [Member] | Non Performing Other Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans   776
Other Loans Held For Sale [Member] | Performing Other Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans   0
Other Loans Held For Sale [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans   776
Performing Troubled Debt Restructured Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans 26,747 30,154
Non Performing Troubled Debt Restructured Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans 2,484 3,124
Non Performing Other Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans 6,750 3,404
Performing Other Loans [Member]
    
Note 4 - Loans (Details) - Composition of Troubled Debt Restructurings Impaired Loans [Line Items]    
Total impaired loans $ 10,593 $ 5,413