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Note 5 - Fair Value Measurements - Assets Measured on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Assets measured on a recurring basis | $ 99,469 | $ 98,938
US Government Agencies Debt Securities [Member] |  |
Assets measured on a recurring basis | 1,995 | 7,471
Subordinated Debt Securities [Member] |  |
Assets measured on a recurring basis | 4,086 |
US States and Political Subdivisions Debt Securities [Member] |  |
Assets measured on a recurring basis | 72,911 | 73,093
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Assets measured on a recurring basis | 19,817 | 17,758
Debt Securities [Member] |  |
Assets measured on a recurring basis | 98,809 | 98,322
Equity Securities [Member] |  |
Assets measured on a recurring basis | 660 | 616
Fair Value, Inputs, Level 1 [Member] |  |
Assets measured on a recurring basis | 660 | 616
Fair Value, Inputs, Level 1 [Member] | US Government Agencies Debt Securities [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Subordinated Debt Securities [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] |  |
Assets measured on a recurring basis | 660 | 616
Fair Value, Inputs, Level 2 [Member] |  |
Assets measured on a recurring basis | 98,809 | 98,322
Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities [Member] |  |
Assets measured on a recurring basis | 1,995 | 7,471
Fair Value, Inputs, Level 2 [Member] | Subordinated Debt Securities [Member] |  |
Assets measured on a recurring basis | 4,086 |
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Assets measured on a recurring basis | 72,911 | 73,093
Fair Value, Inputs, Level 2 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Assets measured on a recurring basis | 19,817 | 17,758
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] |  |
Assets measured on a recurring basis | 98,809 | 98,322
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | US Government Agencies Debt Securities [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | Subordinated Debt Securities [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member] |  |
Assets measured on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] |  |
Assets measured on a recurring basis |  |

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References No definition available. + Details
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