Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2016	Nov. 16, 2016	Feb. 27, 2016
Document and Entity Information
Entity Registrant Name	SemiLEDs Corp
Entity Central Index Key	0001333822
Document Type	10-K
Document Period End Date	Aug. 31, 2016
Amendment Flag	false
Current Fiscal Year End Date	--08-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 4.2
Entity Common Stock, Shares Outstanding		3,517,290
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY