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v3.20.1

Note 1 - Basis of Presentation and Significant Accounting Policies (Details Textual) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 USD ($) | Jan. 01, 2019 USD ($) | Dec. 31, 2018 USD ($)
Number of Operating Segments | 1 |  |
Minimum Principal Balance of Loans for Quarterly Rating Review | $ 500 |  |
Restructured Loans, Reserves | $ 250 |  |
Lessee, Operating Lease, Term of Contract | 10 years |  |
Furniture and Fixtures [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |
Furniture and Fixtures [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 10 years |  |
Equipment, Computer Hardware and Software [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  |
Equipment, Computer Hardware and Software [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |
Building and Building Improvements [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 7 years |  |
Building and Building Improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life | 40 years |  |
Land Improvements [Member] |  |  |
Property, Plant and Equipment, Useful Life | 20 years |  |
Other Assets [Member] |  |  |
Equity Securities without Readily Determinable Fair Value, Amount | $ 3,680 |  | $ 2,200
Operating Lease, Right-of-Use Asset | 917,000 |  |
Other Assets [Member] | Accounting Standards Update 2016-02 [Member] |  |  |
Operating Lease, Right-of-Use Asset |  | $ 915 |
Other Liabilities [Member] |  |  |
Operating Lease, Liability, Total | 1,009 |  |
Other Liabilities [Member] | Accounting Standards Update 2016-02 [Member] |  |  |
Operating Lease, Liability, Total |  | $ 915 |
Investment in Federal Home Loan Bank (FHLB) and Federal Reserve Bank (FRB) Stock [Member] |  |  |
Investment Owned, at Cost | $ 8,900 |  | $ 7,780

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