Concentration Of Risk And Segment Data (Narrative) (Details)	3 Months Ended
Nov. 30, 2011	Nov. 30, 2010
Concentration Of Risk And Segment Data [Abstract]
Number of largest customers accounted for 49% of the net revenue	5
Percentage of revenue accounted by major customers	49.00%
Number of customers accounted for 90% of its net revenue	52
Percentage of revenue accounted for by customers	90.00%
Number of operating countries	25
Total foreign net revenue percentage	86.70%	86.40%

Number of customers accounted for 90% of its net revenue.

No definition available.

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Number of largest customers accounted for 0% of the net revenue.

No definition available.

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Percentage of the company's revenue generated by foreign countries outside the U. S.

No definition available.

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The percentage of revenue accounted for by the company's customers.

No definition available.

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Percentage of the company's revenue generated by the top 5 customers.

No definition available.

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The number of countries in which the entity operates as of balance sheet date.

No definition available.

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