STOCKBASED COMPENSATION (Details 3) - Stock Option and RSU Transactions [Member] - shares	3 Months Ended			9 Months Ended
	Feb. 28, 2023	Nov. 30, 2022	Aug. 31, 2022	Feb. 28, 2023
Available shares, beginning	1,387,000	1,406,000	1,826,000	1,826,000
Options granted	(1,000)	(5,000)	(103,000)
RSUs granted	0	(14,000)	(323,000)
Options cancelled and adjusted	8,000		6,000
Available shares, ending	1,394,000	1,387,000	1,406,000	1,394,000