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Note 12 - Income Taxes (Details Textual) - USD ($) | 3 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2024
Effective Income Tax Rate Reconciliation, at Federal and State Statutory Income Tax Rate, Percent | 25.74% | 25.74% |
Unrecognized Tax Benefits | $ 273,936 |  | $ 273,936
Income Tax Examination, Year under Examination | 2018 2019 |  |
Domestic Tax Jurisdiction [Member] | Internal Revenue Service (IRS) [Member] |  |  |
Open Tax Year | 2018 2019 |  |
State and Local Jurisdiction [Member] | Virginia, Jurisdiction [Member] |  |  |
Open Tax Year | 2021 2022 2023 2024 2025 |  |

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- Definition Tax year that remains open to examination under enacted tax laws, in YYYY format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15 + Details
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