OTHER INCOME (EXPENSE), NET (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
OTHER INCOME (EXPENSE), NET
Foreign exchange gain (loss)	$ 32	$ (111)	$ (12)
Other income (expense), net	(2)	(51)	1
Other income (expense), net	$ 30	$ (162)	$ (11)