Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 107	$ (413)
Other comprehensive loss, net of tax:
Net change in cumulative translation adjustment	99	(15)
Reclassification of cumulative translation adjustment as a result of dissolution of Aehr Test Systems Japan	(2,401)	0
Total comprehensive loss	(2,195)	(428)
Less: Comprehensive income (loss) attributable to the noncontrolling interest	21	(1)
Comprehensive loss, attributable to Aehr Test Systems common shareholders	$ (2,216)	$ (427)