CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Total Aehr Test Systems Shareholders' Equity	Noncontrolling Interest	Total
Beginning Balance, Shares at May. 31, 2012	9,135,000
Beginning Balance, Amount at May. 31, 2012	$ 91	$ 48,622	$ 2,458	$ (44,695)	$ 6,476	$ (22)	$ 6,454
Issuance of common stock under private placement, Shares	1,158,000
Issuance of common stock under private placement, Amount	$ 12	1,126	0	0	1,138	0	1,138
Issuance of common stock under employee plans, Shares	306,000
Issuance of common stock under employee plans, Amount	$ 3	231	0	0	234	0	234
Stock-based compensation	0	601	0	0	601	0	601
Net (loss) income	0	0	0	(3,419)	(3,419)	0	(3,419)
Foreign currency translation adjustment	$ 0	0	(16)	0	(16)	2	(14)
Ending Balance, Shares at May. 31, 2013	10,599,000
Ending Balance, Amount at May. 31, 2013	$ 106	50,580	2,442	(48,114)	5,014	(20)	4,994
Issuance of common stock under employee plans, Shares	604,000
Issuance of common stock under employee plans, Amount	$ 6	709	0	0	715	0	715
Stock-based compensation	0	853	0	0	853	0	853
Net (loss) income	0	0	0	422	422	0	422
Foreign currency translation adjustment	$ 0	0	46	0	46	(1)	45
Ending Balance, Shares at May. 31, 2014	11,203,000
Ending Balance, Amount at May. 31, 2014	$ 112	52,142	2,488	(47,692)	7,050	(21)	7,029
Issuance of common stock under private placement, Shares	1,065,000
Issuance of common stock under private placement, Amount	$ 11	2,563	0	0	2,574	0	2,574
Issuance of common stock under employee plans, Shares	589,000
Issuance of common stock under employee plans, Amount	$ 6	849	0	0	855	0	855
Stock-based compensation	0	993	0	0	993	0	993
Net (loss) income	0	0	0	(6,647)	(6,647)	0	(6,647)
Foreign currency translation adjustment	$ 0	0	(257)	0	(257)	3	(254)
Ending Balance, Shares at May. 31, 2015	12,857,000
Ending Balance, Amount at May. 31, 2015	$ 129	$ 56,547	$ 2,231	$ (54,339)	$ 4,568	$ (18)	$ 4,550