Condensed Consolidated Balance Sheets (Parentheticals) - USD ($)	Aug. 31, 2023	May 31, 2023
Statement of Financial Position [Abstract]
Accounts receivable, net of allowance for doubtful accounts (in Dollars)	$ 181,000	$ 181,000
Net of accumulated depreciation and amortization (in Dollars)	$ 288,852	$ 270,606
Preferred stock, par value (in Dollars per share)	$ 1	$ 1
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued
Common stock par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	12,500,000	12,500,000
Common stock, shares issued	3,322,527	3,322,527
Common stock, shares outstanding	2,143,712	2,143,712
Treasury stock, shares	1,178,815	1,178,815