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Note 12 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2025	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

X

- Definition

Percentage of the combined domestic federal and state statutory tax rate applicable to pretax income (loss).

+ References

No definition available.

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- Definition

Tax year being audited in the income tax examination, in YYYY format.

+ References

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+ Details

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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

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 217
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-217

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482525/740-10-45-10B

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