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Note 5 - Fair Value Measurements (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss) | $ 0 |  | $ 0 |
Goodwill, Impairment Loss | $ 2,254,624 | $ 0 | $ 2,254,624 | $ 0
Measurement Input, Discount Rate [Member] |  |  |  |
Reporting Unit, Measurement Input | 22.50% |  | 22.50% |
Measurement Input, Long-Term Revenue Growth Rate [Member] |  |  |  |
Reporting Unit, Measurement Input | 3.00% |  | 3.00% |

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