Discontinued Operations (Summary of AMS Amounts) (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Discontinued Operations [Abstract]
Net revenue	$ 14,624	$ 586,652	$ 1,087,401
(Loss) income from discontinued operations, before tax	(7,689)	26,694	58,950
Income tax expense	9	6,140	8,342
(Loss) income from discontinued operations, net of tax	(7,698)	20,554	50,608
(Loss) gain on sale of discontinued operations, before tax	(300)	230,878
Income tax expense	575	7,579
(Loss) gain on sale of discontinued operations, net of tax	(875)	223,299
Discontinued operations, net of tax	$ (8,573)	$ 243,853	$ 50,608