Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
Income Statement [Abstract]
Net sales	$ 5,318	$ 6,633
Cost of sales	3,112	3,250
Gross profit	2,206	3,383
Operating expenses:
Selling, general and administrative	1,716	1,845
Research and development	1,060	1,062
Total operating expenses	2,776	2,907
(Loss) income from operations	(570)	476
Interest expense	(178)	(135)
Other expense, net	(3)	(24)
(Loss) income before income tax expense	(751)	317
Income tax expense	(4)	(23)
Net (loss) income	(755)	294
Less: Net (loss) income attributable to the noncontrolling interest	0	0
Net (loss) income attributable to Aehr Test Systems common shareholders	$ (755)	$ 294
Net (loss) income per share: Basic	$ (0.06)	$ 0.02
Net (loss) income per share: Diluted	$ (0.06)	$ 0.02
Shares used in per share calculations: Basic (in thousands)	13,317	12,963
Shares used in per share calculations: Diluted (in thousands)	13,317	13,814