Comprehensive Income (Schedule Of Accumulated Other Comprehensive Income ) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Comprehensive Income [Abstract]
Defined benefit pension plan adjustment, net of tax of $1,554 and $1,306	$ (2,547)	$ (2,139)
Cash flow hedges, net of tax of $33 and $155	(53)	(253)
Foreign currency translation, net of hedging activities, net of tax of $2,093. $1573	1,723	8,854
Total accumulated other comprehensive income	(877)	6,462
Definied benefit pension tax	1,554	1,306
Cash flow hedges tax	33	155
Foreign currency adjustment tax	$ 2,093	$ 1,573