Share-Based Compensation Plans (Stock Option Activity) (Details) (USD $)	3 Months Ended
	Nov. 30, 2013
Share-Based Compensation [Abstract]
Number of Stock Options, Outstanding at August 31, 2013	675,000
Number of Stock Options, Exercised	(43,750)
Number of Stock Options, Outstanding at November 30, 2013	631,250
Number of Stock Options, Options vested and exercisable at November 30, 2013	631,250
Weighted Average Exercise Price Per Share, Outstanding at August 31, 2013	$ 11.25
Weighted Average Exercise Price Per Share, Exercised	$ 9.00
Weighted Average Exercise Price Per Share, Outstanding at November 30, 2013	$ 11.41
Weighted Average Exercise Price Per Share, Options vested and exercisable at November 30, 2013	$ 11.41