Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Income Statement [Abstract]
Revenues, net	$ 2,176	$ 1,206	$ 3,641	$ 1,925
Cost of revenues	1,653	965	2,915	1,706
Gross profit	523	241	726	219
Operating expenses:
Research and development	295	288	699	634
Selling, general and administrative	746	667	1,523	1,348
Gain on disposals of long-lived assets, net	(139)	(207)	(139)	(284)
Total operating expenses	902	748	2,083	1,698
Loss from operations	(379)	(507)	(1,357)	(1,479)
Other income (expenses):
Interest expenses, net	(92)	(92)	(183)	(184)
Other income, net	385	307	951	477
Foreign currency transaction gain (loss), net	(66)	38	(88)	225
Total other income (expenses), net	227	253	680	518
Loss before income taxes	(152)	(254)	(677)	(961)
Net loss	(152)	(254)	(677)	(961)
Less: Net income (loss) attributable to noncontrolling interests	20	1	13	(9)
Net loss attributable to SemiLEDs stockholders	$ (172)	$ (255)	$ (690)	$ (952)
Net loss per share attributable to SemiLEDs stockholders:
Basic	$ (0.04)	$ (0.06)	$ (0.15)	$ (0.24)
Diluted	$ (0.04)	$ (0.06)	$ (0.15)	$ (0.24)
Shares used in computing net loss per share attributable to SemiLEDs stockholders:
Basic	4,490	4,033	4,475	4,023
Diluted	4,490	4,033	4,475	4,023