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Note 8 - Leases (Details Textual)
 12 Months Ended
Oct. 31, 2023
USD ($)
ft²
Oct. 31, 2022
USD ($)
Oct. 31, 2021
USD ($)
Operating Lease, Expense $ 430,765 $ 413,333 $ 407,235
Operating Lease, Weighted Average Remaining Lease Term (Month) 21 months    
Operating Lease, Weighted Average Discount Rate, Percent 7.30%    
Operating Lease, Payments $ 439,016 432,485  
Finance Lease, Interest Expense 7,144 8,798  
Finance Lease, Right-of-Use Asset, Amortization $ 29,497 29,497  
Lessee, Finance Lease, Remaining Lease Term (Month) 34 months    
Lessee, Finance Lease, Discount Rate 4.75%    
Finance Lease, Principal Payments $ 35,724 34,069 $ 5,777
Other Assets [Member]      
Operating Lease, Right-of-Use Asset 596,578 662,328  
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total 141,342 170,839  
Accounts Payable and Accrued Liabilities [Member]      
Operating Lease, Liability, Current 414,159 355,183  
Other Noncurrent Liabilities [Member]      
Operating Lease, Liability, Noncurrent 227,925 374,570  
Finance Lease, Liability, Noncurrent 93,451 130,911  
Accounts Payable and Accrued Liabilities, Current [Member]      
Finance Lease, Liability, Current $ 37,459 $ 35,724  
Operating Lease for Office, Manufacturing and Warehouse Space in Plano, Texas [Member]      
Area of Real Estate Property (Square Foot) | ft² 34,000    
Operating Lease for Warehouse Space in Roanoke, Virginia [Member]      
Area of Real Estate Property (Square Foot) | ft² 36,000    
Lessee, Operating Lease, Term of Contract 3 years    
Operating Lease For Office Equipment [Member]      
Lessee, Operating Lease, Term of Contract 60 months