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Note 4 - Fair Value Measurements (Details) - Additional Quantitative Information About Assets Measured at Fair Value on Non-recurring Basis - Fair Value, Inputs, Level 3 [Member] - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Income Approach Valuation Technique [Member] | Impaired Loans [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Fair Value Estimate (in Dollars) |  | $ 14,013 |
Valuation Techniques / Unobservable Input |  | Discounted cash flow |
Appraisal Adjustments [Member] | Impaired Loans [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Fair Value Estimate (in Dollars) |  | $ 3,294 | $ 12,772
Valuation Techniques / Unobservable Input | [1] | Appraisal of collateral (1) | Appraisal of collateral (1)
Appraisal Adjustments [Member] | Other Real Estate Owned [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Fair Value Estimate (in Dollars) |  | $ 2,308 | $ 2,590
Valuation Techniques / Unobservable Input | [1] | Appraisal of collateral (1) | Appraisal of collateral (1)
Minimum [Member] | Income Approach Valuation Technique [Member] | Impaired Loans [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate |  | 3.10% |
Minimum [Member] | Appraisal Adjustments [Member] | Impaired Loans [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate |  | (0.00%) | (0.00%)
Minimum [Member] | Appraisal Adjustments [Member] | Other Real Estate Owned [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate |  | (0.00%) | (0.00%)
Maximum [Member] | Income Approach Valuation Technique [Member] | Impaired Loans [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate |  | 7.90% |
Maximum [Member] | Appraisal Adjustments [Member] | Impaired Loans [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate |  | 94.10% | 84.60%
Maximum [Member] | Appraisal Adjustments [Member] | Other Real Estate Owned [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate |  | 10.00% | 10.00%
Weighted Average [Member] | Income Approach Valuation Technique [Member] | Impaired Loans [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate |  | (5.20%) |
Weighted Average [Member] | Appraisal Adjustments [Member] | Impaired Loans [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate |  | (29.60%) | (25.50%)
Weighted Average [Member] | Appraisal Adjustments [Member] | Other Real Estate Owned [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate |  | (7.40%) | (7.50%)
[1] | Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Description of the inputs and valuation technique(s) used to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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