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Note 12 - Income Taxes (Details Textual) - USD ($)	3 Months Ended			9 Months Ended
	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2024
Effective Income Tax Rate Reconciliation, at Federal and State Statutory Income Tax Rate, Percent	25.74%		25.74%	25.74%	25.74%
Unrecognized Tax Benefits	$ 273,936			$ 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		2022 2023 2024 2025

X

- Definition

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

+ References

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- Definition

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

+ References

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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
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-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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