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Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities $ 423,756 $ 420,163
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 39,084 47,335
US Government Agencies Debt Securities [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 39,084 47,335
Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 225,129 228,674
Residential Mortgage Backed Securities [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 225,129 228,674
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 180 165
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 219 219
Equity Securities [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 399 384
Residential Mortgage Loan Long-Term [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 41,254 42,030
Residential Mortgage Loan Long-Term [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 41,254 42,030
Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 117,856 101,740
Municipal Bonds [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 117,856 101,740
Fair Value, Inputs, Level 1 [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 180 165
Fair Value, Inputs, Level 2 [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 423,323 419,779
Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Assets [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 34  
Fair Value, Inputs, Level 3 [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 253 219
Derivative Financial Instruments, Assets [Member]
    
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities $ 34