INCOME TAXES - Components of Tax Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2012
Current:
U.S.	$ 11,921	$ 7,214	$ 7,593
Foreign	29,120	29,054	26,325
Total	41,041	36,268	33,918
Deferred:
U.S.	613	3,257	1,853
Foreign	(381)	(402)	(1,031)
Valuation allowance charge (release)	99	(181)	313
Total	331	2,674	1,135
Provision for income taxes	$ 41,372	$ 38,942	$ 35,053