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Note 10 - Intangible Assets - Intangible Assets (Details) (Parentheticals)
Jan. 31, 2024
Jul. 31, 2023
Oct. 31, 2022
Noncompete Agreements [Member]      
Estimated life (Year) 5 years    
Customer Relationships [Member] | Minimum [Member]      
Estimated life (Year)   7 years 7 years
Customer Relationships [Member] | Maximum [Member]      
Estimated life (Year) 15 years    
Order or Production Backlog [Member] | Minimum [Member]      
Estimated life (Year)   1 year 1 year
Order or Production Backlog [Member] | Maximum [Member]      
Estimated life (Year) 2 years    
Patents [Member] | Minimum [Member]      
Estimated life (Year) 10 years    
Patents [Member] | Maximum [Member]      
Estimated life (Year) 14 years    
Trade Names [Member]      
Estimated life (Year) 15 years    
Technology-Based Intangible Assets [Member]      
Estimated life (Year) 10 years