Unaudited Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2018	Nov. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (983)	$ (392)
Other comprehensive gain (loss), net of tax:
Foreign currency translation adjustments, net of tax of $0 for both periods	4	26
Comprehensive loss	(979)	(366)
Comprehensive loss attributable to noncontrolling interests	(6)
Comprehensive loss attributable to SemiLEDs stockholders	$ (973)	$ (366)