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Notes Payable, Long-Term Debt and Capital Lease Obligations (Additional Information) (Details 3) - USD ($)
$ in Thousands
Feb. 28, 2017
Aug. 31, 2016
Debt Instrument [Line Items]    
Debt obligation utilized $ 484,801 $ 502,210
Total assets 10,014,828 10,322,677
Total liabilities $ 7,587,730 $ 7,865,180