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Note 1 - Business Activities and Summary of Significant Accounting Policies - Basic and Diluted Earnings Per Share (Details) - USD ($)
 12 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Net income $ (3,078,000) $ 1,448,000
Basic (in shares) 10,283,449 10,120,254
Add effects of potentially dilutive securities - assumed exercise of stock options (in shares) 0 122,163
Weighted average shares outstanding for diluted earnings per share (C) (in shares) 10,283,449 10,242,417
Basic (in dollars per share) $ (0.3) $ 0.14
Diluted (in dollars per share) $ (0.3) $ 0.14