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Note 2 - Stock Compensation (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2020 | Jul. 31, 2019 | Jul. 31, 2020 | Jul. 31, 2019
Share-based Payment Arrangement, Expense | $ 200 |  | $ 38 | $ 200
Share-based Payment Arrangement, Expense, after Tax | 200 |  | 30 |
Allocated Share Based Compensation, Income |  | $ 1,000 |  |
Share-based Payment Arrangement, Option [Member] |  |  |  |
Share-based Payment Arrangement, Expense | $ 100 | $ 400 | $ 300 | $ 700

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