CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS EQUITY (unaudited) - USD ($) shares in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (loss)	Accumulated Deficit	Total Aehr Test Systems Shareholders Equity	Noncontrolling Interest
Balance, shares at May. 31, 2020		23,107
Balance, amount at May. 31, 2020	$ 14,056,000	$ 231,000	$ 85,898,000	$ 2,234,000	$ (74,286,000)	$ 14,077,000	$ (21,000)
Issuance of common stock under employee plans, shares		380
Issuance of common stock under employee plans, amount	365,000	$ 4,000	361,000	0	0	365,000	0
Stock-based compensation	527,000	0	527,000	0	0	527,000	0
Net income (loss)	(1,859,000)	0	0	0	(1,859,000)	(1,859,000)	0
Foreign currency translation adjustment	104,000	0	0	105,000	0	105,000	(1,000)
Reclassification of cumulative translation Adjustment as a result of dissolution of Aehr Test Systems Japan	(2,401,000)	$ 0	0	(2,401,000)	(22,000)	(2,423,000)	22,000
Balance, shares at Nov. 30, 2020		23,487
Balance, amount at Nov. 30, 2020	10,792,000	$ 235,000	86,786,000	(62,000)	(76,167,000)	10,792,000	0
Balance, shares at Aug. 31, 2020		23,291
Balance, amount at Aug. 31, 2020	12,321,000	$ 233,000	86,356,000	(67,000)	(74,201,000)	12,321,000	0
Issuance of common stock under employee plans, shares		196
Issuance of common stock under employee plans, amount	175,000	$ 2,000	173,000	0	0	175,000	0
Stock-based compensation	257,000	0	257,000	0	0	257,000	0
Net income (loss)	(1,966,000)	0	0	0	(1,966,000)	(1,966,000)	0
Foreign currency translation adjustment	5,000	$ 0	0	5,000	0	5,000	0
Balance, shares at Nov. 30, 2020		23,487
Balance, amount at Nov. 30, 2020	10,792,000	$ 235,000	86,786,000	(62,000)	(76,167,000)	10,792,000	0
Balance, shares at May. 31, 2021		23,725
Balance, amount at May. 31, 2021	11,449,000	$ 237,000	87,553,000	(28,000)	(76,313,000)	11,449,000	0
Issuance of common stock under employee plans, shares		1,413
Issuance of common stock under employee plans, amount	2,744,000	$ 14,000	2,730,000	0	0	2,744,000	0
Stock-based compensation	1,306,000	0	1,306,000	0	0	1,306,000	0
Net income (loss)	1,413,000	0	0	0	1,413,000	1,413,000	0
Foreign currency translation adjustment	(80,000)	$ 0	0	(80,000)	0	(80,000)	0
Proceeds from public offerings, net of issuance costs, shares		1,697
Proceeds from public offerings, net of issuance costs, amount	24,030,000	$ 17,000	24,013,000	0	0	24,030,000	0
Balance, shares at Nov. 30, 2021		26,835
Balance, amount at Nov. 30, 2021	40,862,000	$ 268,000	115,602,000	(108,000)	(74,900,000)	40,862,000	0
Balance, shares at Aug. 31, 2021		24,483
Balance, amount at Aug. 31, 2021	14,232,000	$ 245,000	89,668,000	(64,000)	(75,617,000)	14,232,000	0
Issuance of common stock under employee plans, shares		655
Issuance of common stock under employee plans, amount	1,209,000	$ 6,000	1,203,000	0	0	1,209,000	0
Stock-based compensation	718,000	0	718,000	0	0	718,000	0
Net income (loss)	717,000	0	0	0	717,000	717,000	0
Foreign currency translation adjustment	(44,000)	$ 0	0	(44,000)	0	(44,000)	0
Proceeds from public offerings, net of issuance costs, shares		1,697
Proceeds from public offerings, net of issuance costs, amount	24,030,000	$ 17,000	24,013,000	0	0	24,030,000	0
Balance, shares at Nov. 30, 2021		26,835
Balance, amount at Nov. 30, 2021	$ 40,862,000	$ 268,000	$ 115,602,000	$ (108,000)	$ (74,900,000)	$ 40,862,000	$ 0