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Business (Details) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended
	Dec. 08, 2010 Common Stock	Aug. 31, 2011 Common Stock	Aug. 31, 2012 Taiwan SemiLEDs	Aug. 31, 2011 Taiwan SemiLEDs	Aug. 31, 2012 Helios Crew	Aug. 31, 2011 Helios Crew	Aug. 31, 2012 Hong Kong SemiLEDs	Aug. 31, 2011 Hong Kong SemiLEDs	Aug. 31, 2012 SBDI	Aug. 31, 2011 SBDI	Aug. 31, 2012 Ning Xiang	Aug. 31, 2011 Ning Xiang	Aug. 31, 2012 Shenzhen SemiLEDs	Aug. 31, 2012 HB Lighting
Business
Ownership interest (as a percent)			100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	51.00%	51.00%	100.00%	100.00%
New common shares issued in initial public offering	6,038	6,038

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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