Note 15. Income Taxes (Detail) - Components of the Provision for Income Taxes (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Current
U.S. federal	$ 16,358	$ 17,586
U.S. state and local	1,289	1,470
Non-U.S.	2,684	2,272
Total current taxes	20,331	21,328
Deferred
U.S. federal	1,576	280
U.S. state and local	117	27
Non-U.S.	(280)	(149)
Total deferred taxes	1,413	158
Total provision for income taxes	$ 21,744	$ 21,486