Note 9 - Segment Information - Sales by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Net sales	$ 22,298	$ 21,505	$ 40,642	$ 38,423
UNITED STATES
Net sales	20,908	19,950	37,012	36,366
CANADA
Net sales	588	663	1,172	961
ITALY
Net sales	294	173	1,392	173
MEXICO
Net sales	1	53	3	78
All Other Foreign Countries [Member]
Net sales	507	666	1,063	845
Non-US [Member]
Net sales	$ 1,390	$ 1,555	$ 3,630	$ 2,057