Condensed Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (735)	$ 245	$ (2,594)	$ 83
Other comprehensive income (loss), net of tax:
Net change in cumulative translation adjustment	39	5	143	(15)
Reclassification of cumulative translation adjustment as a result of dissolution of Aehr Test Systems Japan	0	0	(2,401)	0
Total comprehensive (loss) income	(696)	250	(4,852)	68
Less: Comprehensive income (loss) attributable to the noncontrolling interest	0	0	21	(1)
Comprehensive (loss) income, attributable to Aehr Test Systems common shareholders	$ (696)	$ 250	$ (4,873)	$ 69