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Investments - Schedule of Equity Method Investment Balance Sheet and Statement of Operations (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2012
Schedule of Equity Method Investments [Line Items]      
Equity (income) loss from investments $ 107,446 $ 97,350 $ 102,389