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Note 14 - Concentrations, Risks and Uncertainties (Details Textual) - USD ($)	12 Months Ended
	May 31, 2025	May 31, 2024
One Customer [Member]
Purchases From Customers	$ 627,000	$ 769,000
Revenue Benchmark [Member] \| Customer Concentration Risk [Member] \| Two to Four Customers [Member]
Concentration Risk, Percentage	76.00%	81.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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