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Note 6 - Earnings Per Share (Details Textual) - shares
3 Months Ended 6 Months Ended
Apr. 30, 2022
Apr. 30, 2021
Apr. 30, 2022
Apr. 30, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 420,223 321,338 459,889 331,338