Note 6 - Long-term Debt - Summary of Long-term Debt (Details) - USD ($)	Aug. 31, 2025	May 31, 2025
Long-Term Debt, Gross	$ 10,623,282	$ 11,169,342
Debt issuance costs, net of amortization	(85,475)	(86,335)
Total debt, net of debt issuance costs	10,537,807	11,083,007
Less: Current portion of long-term debt	(2,324,241)	(2,249,524)
Long-Term Debt, net of current portion and debt issuance costs	8,213,566	8,833,483
Term Loans Due July 29, 2027 [Member]
Long-Term Debt, Gross	9,968,888	10,502,754
Term Loan Payable Due August 10, 2028 [Member]
Long-Term Debt, Gross	$ 654,394	$ 666,588