Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Consolidated Statements Of Operations
Net sales	$ 16,488	$ 15,521	$ 13,737
Cost of sales	9,712	9,314	8,225
Gross profit	6,776	6,207	5,512
Operating expenses:
Selling, general and administrative	6,872	6,526	5,964
Research and development	3,211	4,188	4,567
Gain on bankruptcy claim	0	0	(832)
Total operating expenses	10,083	10,714	9,699
Loss from operations	(3,307)	(4,507)	(4,187)
Interest income	0	0	3
Interest expense	(49)	(4)	0
Gain on sale of long-term investment	0	990	0
Other (expense) income, net	(33)	117	762
Loss before income tax (expense) benefit	(3,389)	(3,404)	(3,422)
Income tax (expense) benefit	(30)	15	49
Net Loss	(3,419)	(3,389)	(3,373)
Less: Net income attributable to the noncontrolling interest	0	1	16
Net loss attributable to Aehr Test Systems Common shareholders	$ (3,419)	$ (3,390)	$ (3,389)
Net loss per share - basic and diluted	$ (0.36)	$ (0.38)	$ (0.39)
Shares used in per share calculation - basic and diluted	9,549	9,016	8,776