Note 11 - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Oct. 31, 2021
Amortizable intangible assets, net	$ 14,456	$ 2,739
Amortizable intangible assets, net	14,456	2,739
Non-amortizable intangible assets, trademarks	2,874	1,174
Noncompete Agreements [Member]
Amortizable intangible assets, gross	423	423
Accumulated amortization	(311)	(289)
Amortizable intangible assets, net	112	134
Amortizable intangible assets, net	112	134
Proprietary Techology (estimated life 10 years)	423	423
Customer Relationships [Member]
Amortizable intangible assets, gross	6,058	5,058
Accumulated amortization	(2,877)	(2,711)
Amortizable intangible assets, net	3,181	2,347
Amortizable intangible assets, net	3,181	2,347
Proprietary Techology (estimated life 10 years)	6,058	5,058
Order or Production Backlog [Member]
Amortizable intangible assets, gross	327	287
Accumulated amortization	(290)	(287)
Amortizable intangible assets, net	37	0
Amortizable intangible assets, net	37	0
Proprietary Techology (estimated life 10 years)	327	287
Patents [Member]
Amortizable intangible assets, gross	368	368
Accumulated amortization	(127)	(110)
Amortizable intangible assets, net	241	258
Amortizable intangible assets, net	241	258
Proprietary Techology (estimated life 10 years)	368	368
Technology-Based Intangible Assets [Member]
Amortizable intangible assets, gross	11,100	0
Accumulated amortization	(215)	0
Amortizable intangible assets, net	10,885	0
Amortizable intangible assets, net	10,885	0
Proprietary Techology (estimated life 10 years)	$ 11,100	$ 0