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Note 13 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) | 12 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024
Unrecognized tax benefits balance at beginning of year | $ 27,977 | $ 28,194
Gross increases (decreases) for tax positions of prior years | 8,524 | (1,768)
Gross increases for current year tax positions | 0 | 1,551
Unrecognized tax benefits balance at end of year | $ 36,501 | $ 27,977

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- Definition Amount of increase (decrease) in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References No definition available. + Details
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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 -SubTopic 10 -Name Accounting Standards Codification -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 + Details
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