Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 251	$ (629)	$ (162)	$ (2,144)
Other comprehensive income (loss), net of tax:
Net change in cumulative translation adjustments	(5)	(34)	(20)	(49)
Total comprehensive income (loss)	246	(663)	(182)	(2,193)
Less: Comprehensive income attributable to the noncontrolling interest	0	1	(1)	2
Comprehensive income (loss), attributable to Aehr Test Systems common shareholders	$ 246	$ (664)	$ (181)	$ (2,195)