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Note 13 - Income Taxes - Income Tax Expense (Details) - USD ($)
 12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
U.S. Federal, Current Income Tax Expense (Benefit) $ 0 $ 830
U.S. Federal, Deferred Income Tax Expense (Benefit) 0 0
U.S. Federal, Net Income Tax Expense (Benefit) 0 830
State, Current Income Tax Expense (Benefit) 30,297 19,872
State, Deferred Income Tax Expense (Benefit) 0 0
State, Net Income Tax Expense (Benefit) 30,297 19,872
Total, Current Income Tax Expense (Benefit) 30,297 20,702
Total, Deferred Income Tax Expense (Benefit) 0 0
Income tax expense $ 30,297 $ 20,702