Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2013	Feb. 29, 2012
Condensed Consolidated Statements Of Operations
Net sales	$ 3,340	$ 2,855	$ 13,226	$ 10,845
Cost of sales	2,575	1,747	7,742	6,807
Gross profit	765	1,108	5,484	4,038
Operating expenses:
Selling, general and administrative	1,511	1,525	5,368	4,654
Research and development	685	933	2,577	3,054
Total operating expenses	2,196	2,458	7,945	7,708
Loss from operations	(1,431)	(1,350)	(2,461)	(3,670)
Interest expense	(18)	0	(43)	0
Gain on sale of long-term investment	0	0	0	990
Other (expense) income, net	(9)	7	(43)	53
Loss before income tax (expense) benefit	(1,458)	(1,343)	(2,547)	(2,627)
Income tax (expense) benefit	0	(18)	(18)	17
Net Loss	(1,458)	(1,361)	(2,565)	(2,610)
Less: Net income attributable to the noncontrolling interest	0	0	0	1
Net loss attributable to Aehr Test Systems Common shareholders	$ (1,458)	$ (1,361)	$ (2,565)	$ (2,611)
Net loss per share - basic	$ (0.16)	$ (0.15)	$ (0.28)	$ (0.29)
Net loss per share - diluted	$ (0.16)	$ (0.15)	$ (0.28)	$ (0.29)
Shares used in per share calculation - basic	9,363	9,055	9,276	8,989
Shares used in per share calculation - diluted	9,363	9,055	9,276	8,989