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Summary of Significant Accounting Policies (Details 4)	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Patents and trademarks
Intangible Assets
Estimated useful lives	17 years	17 years
Patents and trademarks | Minimum
Intangible Assets
Estimated useful lives	3 years
Patents and trademarks | Maximum
Intangible Assets
Estimated useful lives	25 years
Acquired technology
Intangible Assets
Estimated useful lives	4 years	4 years
Customer relationships
Intangible Assets
Estimated useful lives	5 years	5 years

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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