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Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale $ 357,421 $ 353,678
Trading equity securities 8 6
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 0 0
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 107,686 106,885
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 650 0
US Government Agencies Debt Securities [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 108,336 106,885
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 0 0
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 128,684 97,525
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 17,673 20,289
US States and Political Subdivisions Debt Securities [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 146,357 117,814
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 0 0
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 63,103 66,277
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 0 0
Mortgage-backed Securities, Issued by Private Enterprises [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 63,103 66,277
Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 0 0
Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 37,785 61,030
Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 0 0
Collateralized Mortgage Obligations [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 37,785 61,030
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 263 91
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 0 0
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 1,577 1,581
Equity Securities [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 1,840 1,672
Fair Value, Inputs, Level 1 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 263 91
Trading equity securities 8 6
Fair Value, Inputs, Level 2 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 337,258 331,717
Trading equity securities 0 0
Fair Value, Inputs, Level 3 [Member]
    
Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis [Line Items]    
Securities Available For Sale 19,900 21,870
Trading equity securities $ 0 $ 0