Stock-Based Compensation (Stock Option and SARs Activity) (Details 2) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended	12 Months Ended
		May. 31, 2015	Aug. 31, 2014
Stock-Based Compensation [Abstract]
Shares Available for Grant, Beginning Balance		10,823,646
Shares Available for Grant, Options granted		(435,000)
Shares Available for Grant, Options canceled		1,818,653
Shares Available for Grant, Restricted stock awards granted	[1]	(3,863,323)
Shares Available for Grant, Ending Balance		8,343,976	10,823,646
Options Outstanding, beginning balance		5,432,002
Options Outstanding, options granted		435,000
Options Outstanding, options canceled		(1,818,653)
Options Outstanding, options exercised		(267,971)
Options Outstanding, ending balance		3,780,378	5,432,002
Options Outstanding, exercisable ending balance		3,780,378
Aggregate Intrinsic Value, beginning balance		$ 400
Aggregate Intrinsic Value, ending balance		5,092	$ 400
Aggregate Intrinsic Value, Exercisable ending balance		$ 5,092
Weighted-Average Exercise Price, beginning balance		$ 26.32
Weighted-Average Exercise Price, options granted		18.49
Weighted-Average Exercise Price, options canceled		24.82
Weighted-Average Exercise Price, options exercised		20.29
Weighted-Average Exercise Price, ending balance		26.57	$ 26.32
Weighted-Average Exercise Price, exercisable ending balance		$ 26.57
Weighted-Average Remaining Contractual Life		1 year 9 months 14 days	1 year 6 months 7 days
Weighted-Average Remaining Contractual Life, Exercisable ending balance		1 year 9 months 14 days

[1] Represents the maximum number of shares that can be issued based on the achievement of certain performance criteria.