Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (152)	$ (254)	$ (677)	$ (961)
Other comprehensive loss, net of tax:
Foreign currency translation adjustments, net of tax of $0 for all periods presented	26	(32)	34	(60)
Comprehensive loss	(126)	(286)	(643)	(1,021)
Comprehensive income (loss) attributable to noncontrolling interests	20	2	12	(7)
Comprehensive loss attributable to SemiLEDs stockholders	$ (146)	$ (288)	$ (655)	$ (1,014)