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Product and Geographic Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Aug. 31, 2012	May 31, 2012	Feb. 29, 2012	Nov. 30, 2011	Aug. 31, 2011	May 31, 2011	Feb. 28, 2011	Nov. 30, 2010	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2010
Revenues by products
Revenues	$ 5,469	$ 9,178	$ 7,905	$ 6,747	$ 5,329	$ 5,600	$ 9,957	$ 13,016	$ 29,299	$ 33,902	$ 35,763
LED chips
Revenues by products
Revenues									7,805	19,712	27,579
LED components
Revenues by products
Revenues									14,820	10,733	7,621
Lighting products
Revenues by products
Revenues									4,386	715	14
Other
Revenues by products
Revenues									$ 2,288	$ 2,742	$ 549

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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