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Unaudited Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (707)	$ (322)
Other comprehensive gain (loss), net of tax:
Foreign currency translation adjustments, net of tax of $0 for both periods	(28)	(23)
Comprehensive loss	(735)	(345)
Comprehensive loss attributable to noncontrolling interests	(9)	(4)
Comprehensive loss attributable to SemiLEDs stockholders	$ (726)	$ (341)

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