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Note 8 - Commitments and Off-balance Sheet Risk (Details Textual) - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2016 | Dec. 31, 2015
Interest Rate Swap [Member] |  |
Derivative, Notional Amount | $ 14,000,000 |
Derivative, Fair Value, Net | $ (2,400,000) |
Minimum [Member] |  |
Fees Accreted Into Income During Interest Rate Swap Agreements Term | 4 years |
Maximum [Member] |  |
Fees Accreted Into Income During Interest Rate Swap Agreements Term | 15 years |
Reserve or Liability Balance for Financial Instruments With Off Balance Sheet Risk | $ 0 | $ 0

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