Note 7 - Leases (Details Textual)	3 Months Ended
	Jan. 31, 2022 USD ($) ft²	Jan. 31, 2021 USD ($)	Oct. 31, 2021 USD ($)
Operating Lease, Expense	$ 103,333	$ 100,348
Operating Lease, Weighted Average Remaining Lease Term (Year)	32 years 4 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	5.00%
Operating Lease, Payments	$ 107,284	97,300
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	0	0
Finance Lease, Interest Expense	2,350
Finance Lease, Right-of-Use Asset, Amortization	$ 7,374
Lessee, Finance Lease, Remaining Lease Term (Year)	55 years
Lessee, Finance Lease, Discount Rate	4.75%
Finance Lease, Principal Payments	$ 8,366	$ (0)
Other Assets [Member]
Operating Lease, Right-of-Use Asset	938,870		$ 1,028,639
Accounts Payable and Accrued Liabilities [Member]
Operating Lease, Liability, Current	392,889		385,463
Other Noncurrent Liabilities [Member]
Operating Lease, Liability, Noncurrent	628,608		729,753
Finance Lease, Liability, Noncurrent	157,862		166,634
Other Liabilities [Member]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total	192,962		200,337
Accounts Payable and Accrued Liabilities, Current [Member]
Finance Lease, Liability, Current	$ 34,476		$ 34,071
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