Income Taxes (Schedule Of Provision (Benefit) For Income Taxes And Effective Income Tax Rate) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Income Taxes [Abstract]
Provision for income taxes	$ 9,637	$ 8,689	$ 19,019	$ 14,576
Effective income tax rate	32.00%	34.10%	33.20%	33.40%