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Note 6 - (Loss) Earnings Per Share (Details Textual) - shares
3 Months Ended 9 Months Ended
Jul. 31, 2020
Jul. 31, 2019
Jul. 31, 2020
Jul. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 402,838 124,097 402,838 124,097