Note 11 - Intangible Assets - Intangible Assets-parentheticals (Details) (Parentheticals)	9 Months Ended	12 Months Ended
	Jul. 31, 2022	Oct. 31, 2021
Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years	5 years
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	7 years	7 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years	15 years
Order or Production Backlog [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	1 year	1 year
Order or Production Backlog [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	2 years	2 years
Patents [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years	10 years
Patents [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	14 years	14 years
Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years	15 years
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years	10 years