7. INCOME TAXES (Details 1) - USD ($) $ in Thousands	12 Months Ended
May 31, 2021	May 31, 2020	May 31, 2019
Federal income taxes:
Current	$ 163	$ 0	$ 0
Deferred	0	0	0
State income taxes:
Current	13	(30)	(6)
Deferred	0	0	0
Foreign income taxes:
Current	1	(6)	(21)
Deferred	0	0	0
Income tax (expense) benefit	$ 177	$ (36)	$ (27)

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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