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Note 8 - Segment Information - Sales by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Net sales	$ 19,200	$ 13,458
UNITED STATES
Net sales	18,058	12,060
CANADA
Net sales	636	882
CHINA
Net sales	221	174
All Other Foreign Countries [Member]
Net sales	285	342
Non-US [Member]
Net sales	$ 1,142	$ 1,398

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