Note 6 - Long-term Debt - Summary of Long-term Debt (Details) - USD ($)	Feb. 28, 2025	May 31, 2024
Long-Term Debt, Gross	$ 11,739,538	$ 13,534,442
Debt issuance costs, net of amortization	(87,625)	(91,494)
Total debt, net of debt issuance costs	11,651,913	13,442,948
Less: Current portion of long-term debt	(2,152,893)	(2,362,212)
Long-term debt, net of current portion	9,499,020	11,080,736
Term Loans Due July 29, 2027 [Member]
Long-Term Debt, Gross	11,030,598	12,519,501
Term Loan Payable Due March 19, 2025 [Member]
Long-Term Debt, Gross	27,267	271,061
Term Loan Payable Due August 10, 2028 [Member]
Long-Term Debt, Gross	678,257	709,916
Other Debt [Member]
Long-Term Debt, Gross	$ 3,416	$ 33,964