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Note 6 - Long-term Debt and Notes Payable - Long-term Debt (Details) - USD ($)	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Oct. 31, 2022
Long-term debt	$ 4,275,941		$ 4,528,602
Current installments	4,275,941		338,094
Long-term debt, excluding current installments	$ 0		4,190,508
Virginia Real Estate Loan [Member]
Debt Instrument, Maturity Date	May 01, 2024	May 01, 2024
Long-term debt	$ 3,490,537		3,669,294
North Carolina Real Estate Loan [Member]
Debt Instrument, Maturity Date	May 01, 2024	May 01, 2024
Long-term debt	$ 785,404		$ 859,308

X

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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