Goodwill Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
	Nov. 30, 2015 USD ($)
Goodwill [Roll Forward]
August 31, 2015	$ 175,676
November 30, 2015	175,377
Auto and Metals Recycling
Goodwill [Roll Forward]
August 31, 2015	175,676
Foreign currency translation adjustment	(299)
November 30, 2015	$ 175,377