Unaudited Condensed Consolidated Statement of Changes in Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Total SemiLEDs Shareholders' Equity	Non-Controlling Interests
BALANCE at Aug. 31, 2020	$ 2,568		$ 177,235	$ 3,647	$ (178,360)	$ 2,522	$ 46
BALANCE (in shares) at Aug. 31, 2020		4,011
Stock-based compensation	21		21			21
Change ownership in SBDI	(12)		(9)			(9)	(3)
Comprehensive income (loss):
Other comprehensive income (loss)	(28)			(29)		(29)	1
Net loss	(707)				(697)	(697)	(10)
BALANCE at Nov. 30, 2020	1,842		177,247	3,618	(179,057)	1,808	34
BALANCE (in shares) at Nov. 30, 2020		4,011
BALANCE at Aug. 31, 2020	2,568		177,235	3,647	(178,360)	2,522	46
BALANCE (in shares) at Aug. 31, 2020		4,011
Comprehensive income (loss):
Other comprehensive income (loss)	(60)
Net loss	(961)
BALANCE at Feb. 28, 2021	1,622		177,313	3,585	(179,312)	1,586	36
BALANCE (in shares) at Feb. 28, 2021		4,058
BALANCE at Nov. 30, 2020	1,842		177,247	3,618	(179,057)	1,808	34
BALANCE (in shares) at Nov. 30, 2020		4,011
Issuance of common stock under equity incentive plans (in shares)		47
Stock-based compensation	66		66			66
Comprehensive income (loss):
Other comprehensive income (loss)	(32)			(33)		(33)	1
Net loss	(254)				(255)	(255)	1
BALANCE at Feb. 28, 2021	1,622		177,313	3,585	(179,312)	1,586	36
BALANCE (in shares) at Feb. 28, 2021		4,058
BALANCE at Aug. 31, 2021	4,626		182,255	3,543	(181,211)	4,587	39
BALANCE (in shares) at Aug. 31, 2021		4,460
Stock-based compensation	43		43			43
Comprehensive income (loss):
Other comprehensive income (loss)	8			9		9	(1)
Net loss	(525)				(518)	(518)	(7)
BALANCE at Nov. 30, 2021	4,152		182,298	3,552	(181,729)	4,121	31
BALANCE (in shares) at Nov. 30, 2021		4,460
BALANCE at Aug. 31, 2021	4,626		182,255	3,543	(181,211)	4,587	39
BALANCE (in shares) at Aug. 31, 2021		4,460
Comprehensive income (loss):
Other comprehensive income (loss)	34
Net loss	(677)
BALANCE at Feb. 28, 2022	4,180		182,452	3,578	(181,901)	4,129	51
BALANCE (in shares) at Feb. 28, 2022		4,514
BALANCE at Nov. 30, 2021	4,152		182,298	3,552	(181,729)	4,121	31
BALANCE (in shares) at Nov. 30, 2021		4,460
Issuance of common stock under equity incentive plans (in shares)		54
Stock-based compensation	154		154			154
Comprehensive income (loss):
Other comprehensive income (loss)	26			26		26
Net loss	(152)				(172)	(172)	20
BALANCE at Feb. 28, 2022	$ 4,180		$ 182,452	$ 3,578	$ (181,901)	$ 4,129	$ 51
BALANCE (in shares) at Feb. 28, 2022		4,514