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Note 6 - Fair Value (Details) - Assets Measured at Fair Value on a Recurring Basis (USD $)
In Thousands, unless otherwise specified
Jun. 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 $ 351,010 $ 353,678
Trading equity securities 12 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 98,150 106,885
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 0 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 98,150 106,885
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 128,820 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 18,916 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 147,736 117,814
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 1,509 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 59,309 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 60,818 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 42,687 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 42,687 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 264 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 1,355 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 1,619 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 1,773 91
Trading equity securities 12 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 328,966 331,717
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 20,271 21,870
Trading equity securities $ 0 $ 0