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Note 8 - Leases (Details Textual)
 12 Months Ended
Oct. 31, 2022
USD ($)
ft²
Oct. 31, 2021
USD ($)
Oct. 31, 2020
USD ($)
Operating Lease, Expense $ 413,333 $ 407,235 $ 396,066
Operating Lease, Weighted Average Remaining Lease Term (Month) 24 months 18 days    
Operating Lease, Weighted Average Discount Rate, Percent 5.00%    
Operating Lease, Payments $ 432,485 407,338  
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability   208,390  
Finance Lease, Interest Expense 8,798 2,439  
Finance Lease, Right-of-Use Asset, Amortization $ 29,497 6,145  
Lessee, Finance Lease, Remaining Lease Term (Month) 46 months    
Lessee, Finance Lease, Discount Rate 4.75%    
Finance Lease, Principal Payments $ 34,069 5,777 $ (0)
Other Assets [Member]      
Operating Lease, Right-of-Use Asset 662,328 1,028,639  
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total 170,839 200,337  
Accounts Payable and Accrued Liabilities [Member]      
Operating Lease, Liability, Current 355,183 385,463  
Other Noncurrent Liabilities [Member]      
Operating Lease, Liability, Noncurrent 374,570 729,753  
Finance Lease, Liability, Noncurrent 130,911 166,636  
Accounts Payable and Accrued Liabilities, Current [Member]      
Finance Lease, Liability, Current $ 35,724 $ 34,069  
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    
Operating Lease For Office Equipment [Member]      
Lessee, Operating Lease, Term of Contract (Month) 60 months