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Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities $ 414,401 $ 420,163
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 44,388 47,335
US Government Agencies Debt Securities [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 44,388 47,335
Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 220,903 228,674
Residential Mortgage Backed Securities [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 220,903 228,674
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 168 165
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 219 219
Equity Securities [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 387 384
Residential Mortgage Loan Long-Term [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 35,411 42,030
Residential Mortgage Loan Long-Term [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 35,411 42,030
Fair Value, Inputs, Level 1 [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 168 165
Fair Value, Inputs, Level 2 [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 414,014 419,779
Fair Value, Inputs, Level 3 [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 219 219
Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities 113,312 101,740
Municipal Bonds [Member]
    
Note 10 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items]    
Available for Sale Securities $ 113,312 $ 101,740