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Note 12 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($)
12 Months Ended
Oct. 31, 2018
Oct. 31, 2017
Unrecognized tax benefits balance at beginning of year $ 65,549 $ 78,322
Gross decreases for tax positions of prior years (7,708) (12,773)
Gross increases for current year tax positions 2,306
Unrecognized tax benefits balance at end of year $ 60,147 $ 65,549