Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2015	Aug. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 294	$ (907)
Other comprehensive income (loss), net of tax: Net change in cumulative translation adjustment	18	(36)
Total comprehensive income (loss)	312	(943)
Less: Comprehensive income attributable to the noncontrolling interest	0	1
Comprehensive income (loss), attributable to Aehr Test Systems	$ 312	$ (944)