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Other Assets Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
Aug. 31, 2015
Aug. 31, 2014
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 113,613 $ 111,155
Finite-Lived Intangible Assets, Accumulated Amortization (62,965) (55,701)
Finite-Lived Intangible Assets, Net 50,648 55,454
Customer lists    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 70,925 69,862
Finite-Lived Intangible Assets, Accumulated Amortization (30,831) (26,114)
Finite-Lived Intangible Assets, Net 40,094 43,748
Trademarks [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 42,688 41,293
Finite-Lived Intangible Assets, Accumulated Amortization (32,134) (29,587)
Finite-Lived Intangible Assets, Net $ 10,554 $ 11,706