Consolidated Balance Sheets (Parenthetical) - $ / shares	May 31, 2020	May 31, 2019
Statement of Financial Position [Abstract]
Common stock, par value	$ .00	$ .00
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	3,784,554	4,032,878
Common stock, shares outstanding	3,784,554	4,032,878