Condensed Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2020	Nov. 30, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (1,966)	$ 251	$ (1,859)	$ (162)
Other comprehensive income (loss), net of tax:
Net change in cumulative translation adjustment	5	(5)	104	(20)
Reclassification of cumulative translation adjustment as a result of dissolution of Aehr Test Systems Japan	0	0	(2,401)	0
Total comprehensive (loss) income	(1,961)	246	(4,156)	(182)
Less: Comprehensive income (loss) attributable to the noncontrolling interest	0	0	21	(1)
Comprehensive (loss) income, attributable to Aehr Test Systems common shareholders	$ (1,961)	$ 246	$ (4,177)	$ (181)