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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Jan. 01, 2019
Factored Receivable Unpaid Principal Balance | $ 187,000 |  |
Factored Receivable, Customer Reserves | 122,000 |  |
Deferred Tax Assets, Net, Total | 2,762,000 | $ 2,741,000 |
Deferred Tax Assets, Valuation Allowance, Total | (0) | 200,000 |
Other Assets [Member] |  |  |
Operating Lease, Right-of-Use Asset | $ 4,877,000 | 5,075,000 |
Core Deposits [Member] | Other Assets [Member] |  |  |
Finite-Lived Intangible Assets, Net, Ending Balance |  | $ 7,000 |
Accounting Standards Update 2016-02 [Member] |  |  |
Operating Lease, Right-of-Use Asset |  |  | $ 6,700,000
Building and Building Improvements [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 25 years |  |
Building and Building Improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 40 years |  |
Building [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 10 years |  |
Building [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 20 years |  |
Furniture and Fixtures [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 5 years |  |
Furniture and Fixtures [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 15 years |  |
Computer Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 2 years |  |
Computer Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 5 years |  |
Automobiles [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 4 years |  |

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