Note 2 - Business Acquisition - Unaudited Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Revenue			$ 56,294	$ 68,369
Net (loss) income			$ (2,226)	$ 1,510
Basic (in dollars per share)			$ (0.22)	$ 0.15
Diluted (in dollars per share)			$ (0.22)	$ 0.15
Basic (in shares)			10,267,652	10,100,767
Diluted (in shares)			10,267,652	10,233,209
Microlab/FXR LLC [Member]
Revenue	$ 15,652	$ 23,842
Net (loss) income	$ (1,645)	$ 771
Basic (in dollars per share)	$ (0.16)	$ 0.08
Diluted (in dollars per share)	$ (0.16)	$ 0.08
Basic (in shares)	10,290,265	10,127,244
Diluted (in shares)	10,290,265	10,238,932