Note 8 - Segment Information - Sales by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Net sales	$ 16,110	$ 22,298	$ 29,568	$ 40,642
UNITED STATES
Net sales	14,415	20,908	26,475	37,012
CANADA
Net sales	949	588	1,830	1,172
ITALY
Net sales	155	294	185	1,392
MEXICO
Net sales	0	1	3	3
All Other Foreign Countries [Member]
Net sales	591	507	1,075	1,063
Non-US [Member]
Net sales	$ 1,695	$ 1,390	$ 3,093	$ 3,630

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details