Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Income Statement [Abstract]
Net sales	$ 3,558	$ 3,752
Cost of sales	1,948	1,808
Gross profit	1,610	1,944
Operating expenses:
Selling, general and administrative	1,624	1,420
Research and development	959	681
Total operating expenses	2,583	2,101
Loss from operations	(973)	(157)
Interest expense	(14)	(4)
Other income (expense), net	31	(34)
Loss before income tax benefit	(956)	(195)
Income tax benefit	49	29
Net loss	(907)	(166)
Less: Net income attributable to the noncontrolling interest	0	0
Net loss attributable to Aehr Test Systems common shareholders	$ (907)	$ (166)
Net loss per share – Basic and diluted	$ (0.08)	$ (0.02)
Shares used in per share calculations - Basic and diluted	11,391	10,635