Note 11 - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jul. 31, 2022	Oct. 31, 2021	Jan. 31, 2023	Oct. 31, 2022
Finite-Lived Intangible Assets, Net, Ending Balance			$ 14,865	$ 15,296
Trademarks			1,174	1,174
Trademarks [Member]
Trademarks			1,174	1,174
Noncompete Agreements [Member]
Non-compete agreement (estimated life 5 years)			423	423
Accumulated amortization			(345)	(334)
Finite-Lived Intangible Assets, Net, Ending Balance			78	89
Finite-Lived Intangible Asset, Useful Life	5 years	5 years
Customer Relationships [Member]
Non-compete agreement (estimated life 5 years)			6,058	6,058
Accumulated amortization			(3,170)	(3,074)
Finite-Lived Intangible Assets, Net, Ending Balance			2,888	2,984
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	7 years	7 years
Order or Production Backlog [Member]
Non-compete agreement (estimated life 5 years)			327	327
Accumulated amortization			(323)	(313)
Finite-Lived Intangible Assets, Net, Ending Balance			4	14
Order or Production Backlog [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	1 year	1 year
Patents [Member]
Non-compete agreement (estimated life 5 years)			368	368
Accumulated amortization			(151)	(143)
Finite-Lived Intangible Assets, Net, Ending Balance			217	225
Patents [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years
Trade Names [Member]
Non-compete agreement (estimated life 5 years)			1,700	1,700
Accumulated amortization			(104)	(76)
Finite-Lived Intangible Assets, Net, Ending Balance			1,596	1,624
Finite-Lived Intangible Asset, Useful Life	15 years	15 years
Technology-Based Intangible Assets [Member]
Non-compete agreement (estimated life 5 years)			11,100	11,100
Accumulated amortization			(1,018)	(740)
Finite-Lived Intangible Assets, Net, Ending Balance			$ 10,082	$ 10,360
Finite-Lived Intangible Asset, Useful Life	10 years	10 years