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

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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