Goodwill and Intangibles (Details) - USD ($) $ in Thousands	May. 31, 2015	Aug. 31, 2014
Goodwill [Line Items]
Goodwill	$ 156,450	$ 158,696
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	7,195
Finite-Lived Intangible Assets, Amortization Expense, Year Two	5,996
Finite-Lived Intangible Assets, Amortization Expense, Year Three	4,712
Finite-Lived Intangible Assets, Amortization Expense, Year Four	3,767
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 3,543