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Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs $ 43,605 $ 38,769
Commercial Loans [Member] | Principal Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 2,221 2,866
Commercial Loans [Member] | Rate Reduction and Forgiveness of Principal [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 1,266 1,352
Commercial Loans [Member] | Rate Reduction and Payment Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 247  
Commercial Loans [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 3,734 4,218
Real Estate Construction Loans [Member] | Principal Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 15,503 16,009
Real Estate Construction Loans [Member] | Rate Reduction and Payment Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 8,926 9,263
Real Estate Construction Loans [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 24,429 25,272
Commercial Mortgage Loans [Member] | Interest Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 1,399 1,443
Commercial Mortgage Loans [Member] | Principal Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 4,058 2,168
Commercial Mortgage Loans [Member] | Rate Reduction and Payment Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 6,066 1,843
Commercial Mortgage Loans [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 11,523 5,454
Residential Mortgage Loans [Member] | Interest Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 222 241
Residential Mortgage Loans [Member] | Principal Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 1,673 2,206
Residential Mortgage Loans [Member] | Rate Reduction and Forgiveness of Principal [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 217  
Residential Mortgage Loans [Member] | Rate Reduction and Payment Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 1,807 1,378
Residential Mortgage Loans [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 3,919 3,825
Interest Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 1,621 1,684
Principal Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 23,455 23,249
Rate Reduction and Forgiveness of Principal [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs 1,483 1,352
Rate Reduction and Payment Deferral [Member]
    
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]    
Non-accrual TDRs $ 17,046 $ 12,484