REVENUE (Details 2) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
Net sales	$ 50,829	$ 16,600	$ 22,291
Products And Services Transferred At A Point In Time [Member]
Net sales	49,441	15,009	19,948
Services Transferred over Time [Member]
Net sales	$ 1,388	$ 1,591	$ 2,343