Note 6 - Long-term Debt (Details Textual)			6 Months Ended
	Nov. 30, 2023 USD ($)	Aug. 23, 2021	Nov. 30, 2023 USD ($)	Nov. 30, 2022 USD ($)	Jul. 29, 2022 USD ($)
Amortization of Debt Issuance Costs			$ 2,862	$ 2,862
Long-Term Debt, Maturities, Repayments of Principal in Next Rolling 12 Months	$ 2,321,333		2,321,333
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Two	2,269,023		2,269,023
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Three	2,257,551		2,257,551
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Four	7,281,401		7,281,401
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Five	540,580		540,580
Revolving Credit Facility [Member]
Debt Instrument, Face Amount					$ 6,000,000
Line of Credit Facility, Borrowing Capacity Increase					2,000,000
Line of Credit Facility, Maximum Borrowing Capacity	4,000,000		$ 4,000,000
I B C Loan Agreement [Member]
Debt Instrument, Periodic Payment	$ 254,000
Benchmark Value for Declaring or Paying Dividends and Distributions					$ 500,000
Limit Percentage of Debt Obligation					32.40%
Guarantees Combined Amount					$ 3,500,000
I B C Loan Agreement [Member] | Existing Term Loans [Member]
Debt Instrument, Face Amount					2,700,000
I B C Loan Agreement [Member] | Additional Funding [Member]
Debt Instrument, Face Amount					$ 13,200,000
FIB Loan Agreement [Member]
Debt Instrument, Debt Service Coverage Ratio		1.25
Debt Instrument, Debt to Tangible Net Worth Ratio		4
Debt Instrument, Interest Rate, Increase (Decrease)		0.50%
Prime Rate [Member]
Debt Instrument, Interest Rate, Effective Percentage	8.50%		8.50%