CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS EQUITY (unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Total Aehr Test Systems Shareholders Equity	Additional Paid-In Capital	Accumulated Other Comprehensive Income (loss)	Accumulated Deficit	Noncontrolling Interest
Balance, shares at May. 31, 2020		23,107	491
Balance, amount at May. 31, 2020	$ 14,056	$ 231	$ 14,077	$ 85,898	$ 2,234	$ (74,286)	$ (21)
Issuance of common stock under employee plans, amount	483	5	483	478	0	0	0
Stock-based compensation	798		798	798			0
Net income (loss)	(2,594)		(2,594)	0	0	(2,594)	0
Foreign currency translation adjustment	143	0	144	0	144	0	(1)
Reclassification of cumulative translation adjustment as a result of dissolution of Aehr Test Systems Japan	(2,401)		(2,423)		(2,423)		22
Balance, amount at Feb. 28, 2021	10,485	$ 236	$ 10,485	87,174	(45)	(76,880)	0
Balance, shares at Feb. 28, 2021		23,598
Balance, shares at Nov. 30, 2020		23,487	111
Balance, amount at Nov. 30, 2020	10,792	$ 235	$ 10,792	86,786	(62)	(76,167)	0
Issuance of common stock under employee plans, amount	118	1	118	117	0	0	0
Stock-based compensation	271	0	271	271	0	0
Net income (loss)	(735)		(735)	0	0	(735)	0
Foreign currency translation adjustment	39	0	39	0	17	22	0
Balance, amount at Feb. 28, 2021	10,485	$ 236	$ 10,485	87,174	(45)	(76,880)	$ 0
Balance, shares at Feb. 28, 2021		23,598
Balance, shares at May. 31, 2021		23,725
Balance, amount at May. 31, 2021	11,449	$ 237		87,553	(28)	(76,313)
Issuance of common stock under employee plans, shares		1,492
Issuance of common stock under employee plans, amount	2,770	$ 15		2,755	0	0
Stock-based compensation	2,186	$ 0		2,186	0	0
Net income (loss)	3,656			0	0	3,656
Foreign currency translation adjustment	(103)			0	(103)	0
Proceeds from public offerings, net of issuance costs, shares		1,697
Proceeds from public offerings, net of issuance costs, amount	24,030	$ 17		24,013	0	0
Balance, shares at Feb. 28, 2022		26,914
Balance, amount at Feb. 28, 2022	43,988	$ 269		116,507	(131)	(72,657)
Balance, shares at Nov. 30, 2021		26,835
Balance, amount at Nov. 30, 2021	40,862	$ 268		115,602	(108)	(74,900)
Issuance of common stock under employee plans, shares		79
Issuance of common stock under employee plans, amount	26	$ 1		25	0	0
Stock-based compensation	880	0		880	0	0
Net income (loss)	2,243			0	0	2,243
Foreign currency translation adjustment	(23)	$ 0		0	(23)	0
Balance, shares at Feb. 28, 2022		26,914
Balance, amount at Feb. 28, 2022	$ 43,988	$ 269		$ 116,507	$ (131)	$ (72,657)