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Note 10 - Intangible Assets (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Jan. 31, 2022
Oct. 31, 2021
Amortization of Intangible Assets, Total $ 95,000 $ 442,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) 7 years 7 months 13 days