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Note 8 - Segment Information - Sales by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Net sales	$ 19,790	$ 16,836	$ 57,900	$ 46,404
UNITED STATES
Net sales	18,432	15,473	52,952	41,948
CANADA
Net sales	1,052	765	3,678	2,595
GERMANY
Net sales	138	23	305	118
All Other Foreign Countries [Member]
Net sales	168	575	965	1,743
Non-US [Member]
Net sales	$ 1,358	$ 1,363	$ 4,948	$ 4,456

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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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