Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Income Statement [Abstract]
Net sales	$ 2,012	$ 5,533
Cost of sales	1,785	3,262
Gross profit	227	2,271
Operating expenses:
Selling, general and administrative	1,514	1,808
Research and development	900	892
Total operating expenses	2,414	2,700
Loss from operations	(2,187)	(429)
Interest (expense) income, net	(13)	12
Net gain from dissolution of Aehr Test Systems Japan	2,186	0
Other (expense) income, net	(94)	10
Loss before income tax benefit (expense)	(108)	(407)
Income tax benefit (expense)	215	(6)
Net income (loss)	107	(413)
Less: Net income attributable to the noncontrolling interest	0	0
Net income (loss) attributable to Aehr Test Systems common shareholders	$ 107	$ (413)
Net income (loss) per share: basic and diluted	$ .00	$ (0.02)
Shares used in per share calculations: basic (in thousands)	23,248	22,708
Shares used in per share calculations: diluted (in thousands)	23,455	22,708