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Note 12 - Income Taxes - Income Tax Expense (Details) - USD ($)
 12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
U.S. Federal, Current Income Tax Expense (Benefit) $ 0 $ 726 $ 14,163
U.S. Federal, Deferred Income Tax Expense (Benefit) 0 (726) (49,281)
U.S. Federal, Net Income Tax Expense (Benefit) 0 0 (35,118)
State, Current Income Tax Expense (Benefit) 18,041 (5,805) 18,467
State, Deferred Income Tax Expense (Benefit) 0 0 0
State, Income Tax Expense (Benefit) 18,041 (5,805) 18,467
Total Current Income Tax Expense (Benefit) 18,041 (5,079) 32,630
Total Deferred Income Tax Expense (Benefit) 0 (726) (49,281)
Total Net Income Tax Expense (Benefit) $ 18,041 $ (5,805) $ (16,651)