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Note 11 - Fair Value of Financial Instruments and Fair Value Measurements - Quantitative Information for Financial Instruments Measured at Fair Value (Details) - Fair Value, Inputs, Level 3 [Member] - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Dec. 31, 2016
Commercial Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Commercial Construction [Member] |  |
Assets measured at fair value | $ 428 |
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Commercial Construction [Member] |  |
Assets measured at fair value |  | $ 51
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Commercial Construction [Member] | Minimum [Member] |  |
Fair value inputs, comparability adjustments | (16.00%) | (5.00%)
Fair value inputs, management adjustments | 0.00% | 0.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Commercial Construction [Member] | Maximum [Member] |  |
Fair value inputs, comparability adjustments | 1975.00% | 99.00%
Fair value inputs, management adjustments | 10.00% | 10.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Commercial Construction [Member] | Weighted Average [Member] |  |
Fair value inputs, comparability adjustments | 979.50% | 47.00%
Fair value inputs, management adjustments | 5.00% | 5.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Residential [Member] |  |
Assets measured at fair value | $ 16 | $ 1,105
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Residential [Member] | Minimum [Member] |  |
Fair value inputs, comparability adjustments | (43.30%) | (22.00%)
Fair value inputs, management adjustments | 10.00% | 0.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Residential [Member] | Maximum [Member] |  |
Fair value inputs, comparability adjustments | 83.30% | 0.00%
Fair value inputs, management adjustments | 25.00% | 40.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Residential [Member] | Weighted Average [Member] |  |
Fair value inputs, comparability adjustments | 20.00% | (11.00%)
Fair value inputs, management adjustments | 17.50% | 20.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Commercial [Member] |  |
Assets measured at fair value | $ 5,653 | $ 5,445
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Commercial [Member] | Minimum [Member] |  |
Fair value inputs, comparability adjustments |  | (14.08%)
Fair value inputs, management adjustments | 0.00% | 0.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Commercial [Member] | Maximum [Member] |  |
Fair value inputs, comparability adjustments |  | 24.62%
Fair value inputs, management adjustments | 10.00% | 100.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Commercial [Member] | Weighted Average [Member] |  |
Fair value inputs, comparability adjustments |  | 5.27%
Fair value inputs, management adjustments | 5.00% | 50.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Farmland [Member] |  |
Assets measured at fair value | $ 349 | $ 351
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Farmland [Member] | Minimum [Member] |  |
Fair value inputs, comparability adjustments | (71.00%) | (27.00%)
Fair value inputs, management adjustments | 10.00% | 10.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Farmland [Member] | Maximum [Member] |  |
Fair value inputs, comparability adjustments | 88.70% | 15.00%
Fair value inputs, management adjustments | 75.00% | 75.00%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Farmland [Member] | Weighted Average [Member] |  |
Fair value inputs, comparability adjustments | 8.85% | (6.00%)
Fair value inputs, management adjustments | 42.50% | 42.50%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Other Real Estate Owned [Member] |  |
Assets measured at fair value | $ 1,625 | $ 2,505
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Other Real Estate Owned [Member] | Minimum [Member] |  |
Fair value inputs, comparability adjustments | (34.01%) | (50.80%)
Fair value inputs, management adjustments | 1.60% | 6.25%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Other Real Estate Owned [Member] | Maximum [Member] |  |
Fair value inputs, comparability adjustments | 35.00% | 316.00%
Fair value inputs, management adjustments | 81.32% | 76.92%
Real Estate Portfolio Segment [Member] | Market Approach Valuation Technique [Member] | Other Real Estate Owned [Member] | Weighted Average [Member] |  |
Fair value inputs, comparability adjustments | 0.50% | 132.60%
Fair value inputs, management adjustments | 29.15% | 36.31%
Real Estate Portfolio Segment [Member] | Income Approach Valuation Technique [Member] | Commercial [Member] | Weighted Average [Member] |  |
Fair value inputs, management adjustments |  | 10.67%
Fair value inputs, capitalization rate | 10.67% |
Real Estate Portfolio Segment [Member] | Income Approach Valuation Technique [Member] | Other Real Estate Owned [Member] | Weighted Average [Member] |  |
Range Weighted Average |  | 12.50%

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- Definition Percentage of management adjustment to the observed price for a similar asset or liability when an identical transaction does not exist, used as an input to measure fair value. + References No definition available. + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Ratio of the net operating income produced by an asset and its capital cost (original prices paid to buy the asset), used as an input 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=66048111&loc=d3e19207-110258 + Details
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- Definition Percentage of adjustment to the observed price for a similar asset or liability when an identical transaction does not exist, used as an input 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=66048111&loc=d3e19207-110258 + 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=66048111&loc=d3e19207-110258 + Details
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