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Note 9 - Segment Information - Sales by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Net sales	$ 15,257	$ 9,544	$ 36,316	$ 32,348
UNITED STATES
Net sales	14,624	9,315	34,341	31,471
CANADA
Net sales	499	124	1,591	530
MEXICO
Net sales	51	0	77	12
All Other Foreign Countries [Member]
Net sales	83	105	307	335
Non-US [Member]
Net sales	$ 633	$ 229	$ 1,975	$ 877

X

- Definition

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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