Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Feb. 29, 2024	May 31, 2023
Accumulated amortization	$ 835,000	$ 617,000
Intangible assets, net of accumulated amortization	$ 44,000	$ 30,000
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	4,428,571	4,428,571
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.08	$ 0.08
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	16,821,646	16,821,646
Common stock, shares outstanding	16,821,646	16,821,646
Series A Preferred Stock [Member]
Preferred stock, par value	$ 0.08	$ 0.08
Preferred stock, shares authorized	571,429	571,429
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0