Note 7 - Long-term Debt - Summary of Long-term Debt (Details) - USD ($)	Feb. 28, 2026	May 31, 2025
Long-Term Debt, Gross	$ 11,763,650	$ 11,169,342
Total	11,763,650	11,169,342
Debt issuance costs, net of amortization	(62,955)	(86,335)
Total debt, net of debt issuance costs	11,700,695	11,083,007
Less: Current portion of long-term debt	(11,700,695)	(2,249,524)
Long-Term Debt, net of current portion and debt issuance costs	0	8,833,483
Term Loan to International Bank of Commerce [Member]
Long-Term Debt, Gross	9,233,703	10,502,754
Total	9,233,703	10,502,754
Term Loan to First Interstate Bank [Member]
Long-Term Debt, Gross	629,947	666,588
Total	629,947	666,588
Revolving loan to International Bank of Commerce [Member]
Long-Term Debt, Gross	1,900,000	0
Total	$ 1,900,000	$ 0