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Note 15 - Income Taxes (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2018 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Income Tax Expense (Benefit) | $ 4,456 | $ 1,340 |  | $ 8,264 | $ 4,020 |
Effective Income Tax Rate Reconciliation, Percent | (3.00%) |  |  |  |  |
Effective Income Tax Rate Reconciliation, Tax Credit, Percent |  |  |  | 1.00% | 1.00% |
Other Noncash Income Tax Expense |  |  | $ 563,252 |  |  |
Income Tax Examination, Penalties and Interest Expense |  |  |  | $ 0 |  |
Deferred Tax Assets, Net of Valuation Allowance | $ 0 |  |  | $ 0 |  |
Domestic Tax Jurisdiction [Member] |  |  |  |  |  |
Operating Loss Carryforwards |  |  |  |  |  | $ 17,660,934
Operating Loss Carryforwards, Not Subject to Expire |  |  |  |  |  | 16,055,226
Operating Loss Carryforwards, Subject to Expire |  |  |  |  |  | 1,605,708
Tax Credit Carryforward, Amount |  |  |  |  |  | 856,303
State and Local Jurisdiction [Member] |  |  |  |  |  |
Operating Loss Carryforwards |  |  |  |  |  | 7,764,377
Operating Loss Carryforwards, Not Subject to Expire |  |  |  |  |  | 7,513,712
Operating Loss Carryforwards, Subject to Expire |  |  |  |  |  | 250,665
Tax Credit Carryforward, Amount |  |  |  |  |  | $ 952,145
Maximum [Member] |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, Percent |  | 1.00% |  |  |  |

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