Note 15 - Income Taxes (Details) - Components of the Provision for Income Taxes (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Current
U.S. federal	$ 18,117	$ 16,358
U.S. state and local	1,197	1,289
Non-U.S.	3,187	2,684
Total current taxes	22,501	20,331
Deferred
U.S. federal	311	1,576
U.S. state and local	28	117
Non-U.S.	63	(280)
Total deferred taxes	402	1,413
Total provision for income taxes	$ 22,903	$ 21,744