Consolidated Statements of Changes in Equity (Unaudited) - USD ($)	Preferred Stock [Member]	Common Stock [Member]	Treasury Stock, Common [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balances (in shares) at May. 31, 2024	50,000	28,279,701
Balances at May. 31, 2024	$ 5	$ 2,828	$ 0	$ 53,533,272	$ (29,555,356)	$ 23,980,749
Balances (in shares) at May. 31, 2024			0
Preferred dividends	0	0	$ 0	0	(148,082)	(148,082)
Net income	0	0	0	0	335,454	335,454
Net loss	$ 0	$ 0	0	0	335,454	335,454
Balances (in shares) at Aug. 31, 2024	50,000	28,279,701
Balances at Aug. 31, 2024	$ 5	$ 2,828	$ 0	53,533,272	(29,367,984)	24,168,121
Balances (in shares) at Aug. 31, 2024			0
Balances (in shares) at May. 31, 2025	0	27,879,701
Balances at May. 31, 2025	$ 0	$ 2,788	$ (606,737)	48,113,317	(27,633,059)	$ 19,876,309
Balances (in shares) at May. 31, 2025			519,124			519,124
Net income	0	0	$ 0	0	(1,099,022)	$ (1,099,022)
Repurchase of common stock (in shares)			89,876
Repurchase of common stock			$ (123,147)	0	0	(123,147)
Net loss	$ 0	$ 0	0	0	(1,099,022)	(1,099,022)
Balances (in shares) at Aug. 31, 2025	0	27,879,701
Balances at Aug. 31, 2025	$ 0	$ 2,788	$ (729,884)	$ 48,113,317	$ (28,732,081)	$ 18,654,140
Balances (in shares) at Aug. 31, 2025			609,000			609,000