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Note 14 - Commitments and Off-balance Sheet Risk (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Term Debt, Secured by Real Estate Balloon Payment, Period | 5 years |
Liabilities for Accreted Fee Collected from Customer | $ 100 | $ 100
Amount of Federal Reserve Required | 9,200 | 9,100
Reserve or Liability Balance for Financial Instruments With Off Balance Sheet Risk | 0 | $ 0
Interest Rate Swap [Member] |  |
Derivative, Notional Amount | 13,800 |
Derivative, Fair Value, Net | $ (1,800) |
Minimum [Member] |  |
Mortgage Loans on Real Estate, Interest Rate | 4.00% |
Amortization Period for Term Debt, Secured by Real Estate | 10 years |
Interest Rates on Loans, Secured by Non-real Estate Collateral | 4.00% |
Term Debt Secured, by Non-real Estate Collateral Maturity Period | 3 years |
Fees Accreted Into Income During Interest Rate Swap Agreements Term | 4 years |
Maximum [Member] |  |
Mortgage Loans on Real Estate, Interest Rate | 7.00% |
Amortization Period for Term Debt, Secured by Real Estate | 20 years |
Interest Rates on Loans, Secured by Non-real Estate Collateral | 7.50% |
Term Debt Secured, by Non-real Estate Collateral Maturity Period | 7 years |
Fees Accreted Into Income During Interest Rate Swap Agreements Term | 15 years |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Amortization period for the payments related to a credit facility, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13495-108611 + Details
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