Discontinued Operations (Summary of AMS Amounts Included in Discontinued Operations) (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Discontinued Operations [Abstract]
Net revenue	$ 0	$ 82,821	$ 14,624	$ 575,592
(Loss) income from discontinued operations, before tax	(1,514)	3,378	(5,222)	27,164
Income tax expense	0	679	2	5,649
(Loss) income from discontinued operations, net of tax	(1,514)	2,699	(5,224)	21,515
Gain (loss) on sale of discontinued operations, before tax	1,681	248,275	(300)	239,320
Income tax expense	0	9,778	575	9,778
Gain (loss) on sale of discontinued operations, net of tax	1,681	238,497	(875)	229,542
Discontinued operations, net of tax	$ 167	$ 241,196	$ (6,099)	$ 251,057