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Note 18 - Fair Values Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis - USD ($) | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Available for sale securities |  |
Available for sale securities | $ 346,992,000 | $ 432,912,000
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] |  |
Derivatives |  |
Derivative | (253,000) | (253,000)
Assets and liabilities measured at fair value on recurring basis | 346,739,000 | 432,659,000
US Government Agencies Debt Securities [Member] |  |
Available for sale securities |  |
Available for sale securities | 147,040,000 | 193,468,000
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 147,040,000 | 193,468,000
Collateralized Mortgage Backed Securities [Member] |  |
Available for sale securities |  |
Available for sale securities | 67,074,000 | 93,561,000
Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 67,074,000 | 93,561,000
Municipal General Obligation Bonds [Member] |  |
Available for sale securities |  |
Available for sale securities | 122,023,000 | 133,082,000
Municipal General Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 122,023,000 | 133,082,000
Municipal Revenue Bonds [Member] |  |
Available for sale securities |  |
Available for sale securities | 8,914,000 | 10,873,000
Municipal Revenue Bonds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 8,914,000 | 10,873,000
Other Debt Obligations [Member] |  |
Available for sale securities |  |
Available for sale securities | 1,941,000 | 1,928,000
Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 1,941,000 |
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities |  | 1,928,000
Fair Value, Inputs, Level 1 [Member] |  |
Available for sale securities |  |
Available for sale securities | 0 |
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] |  |
Derivatives |  |
Derivative | 0 | 0
Assets and liabilities measured at fair value on recurring basis | 0 | 0
Fair Value, Inputs, Level 1 [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Municipal General Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Municipal Revenue Bonds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 0 |
Fair Value, Inputs, Level 1 [Member] | Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities |  | 0
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] |  |
Derivatives |  |
Derivative | (253,000) | (253,000)
Assets and liabilities measured at fair value on recurring basis | 338,320,000 | 422,378,000
Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 147,040,000 | 193,468,000
Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 67,074,000 | 93,561,000
Fair Value, Inputs, Level 2 [Member] | Municipal General Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 113,604,000 | 122,801,000
Fair Value, Inputs, Level 2 [Member] | Municipal Revenue Bonds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 8,914,000 | 10,873,000
Fair Value, Inputs, Level 2 [Member] | Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 1,941,000 |
Fair Value, Inputs, Level 2 [Member] | Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities |  | 1,928,000
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] |  |
Derivatives |  |
Derivative | 0 | 0
Assets and liabilities measured at fair value on recurring basis | 8,419,000 | 10,281,000
Fair Value, Inputs, Level 3 [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Municipal General Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 8,419,000 | 10,281,000
Fair Value, Inputs, Level 3 [Member] | Municipal Revenue Bonds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities | $ 0 |
Fair Value, Inputs, Level 3 [Member] | Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] |  |
Available for sale securities |  |
Available for sale securities |  | $ 0

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