Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018
Income Statement [Abstract]
Revenues, net	$ 1,745	$ 1,999	$ 4,347	$ 5,545
Cost of revenues	1,405	1,837	4,224	5,775
Gross profit (loss)	340	162	123	(230)
Operating expenses:
Research and development	444	296	1,076	703
Selling, general and administrative	597	799	1,973	2,313
Gain on disposals of long-lived assets, net		(581)	(288)	(790)
Total operating expenses	1,041	514	2,761	2,226
Loss from operations	(701)	(352)	(2,638)	(2,456)
Other income (expenses):
Interest expenses, net	(74)	(7)	(115)	(22)
Other income (losses), net	94	78	48	625
Foreign currency transaction (losses) gain, net	(177)	(45)	20	3
Total other income (expenses), net	(157)	26	(47)	606
Loss before income taxes	(858)	(326)	(2,685)	(1,850)
Net loss	(858)	(326)	(2,685)	(1,850)
Less: Net gain (loss) attributable to noncontrolling interests	1		(1)
Net loss attributable to SemiLEDs stockholders	$ (859)	$ (326)	$ (2,684)	$ (1,850)
Net loss per share attributable to SemiLEDs stockholders:
Basic and diluted	$ (0.24)	$ (0.09)	$ (0.75)	$ (0.52)
Shares used in computing net loss per share attributable to SemiLEDs stockholders:
Basic and diluted	3,589	3,550	3,576	3,546