Income Taxes (Schedule Of Significant ComponentsOf Income Tax Provision) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011
Income Taxes [Abstract]
Federal, Current	$ 33,498	$ 21,694	$ 18,705
State, Current	2,303	1,026	1,309
Foreign, Current	4,173	2,979	2,526
Total Current	39,974	25,699	22,540
Federal, Deferred	(1,554)	(3,829)	(1,484)
State, Deferred	(178)	614	(29)
Foreign, Deferred	(1,505)	(653)	(1,315)
Total Deferred	(3,237)	(3,868)	(2,828)
Total income tax provision	$ 36,737	$ 21,831	$ 19,712