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Note 6 - Basic and Diluted Net Income (Loss) Per Share - Schedule of Dilutive Securities (Details) (Parentheticals) - $ / shares | Sep. 30, 2025 | Sep. 30, 2024
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Debt with Conversion Feature [Member] |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 30 | $ 30

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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-5 + Details
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Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: |
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Balance Type: |
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