Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011
Goodwill
Goodwill, Acquired During Period	$ 9,921	$ 40,718
Goodwill, Translation and Purchase Accounting Adjustments	1,252	(4,118)
Goodwill	139,526	128,353	91,753
EMEA [Member]
Goodwill
Goodwill, Acquired During Period	0	40,718
Goodwill, Translation and Purchase Accounting Adjustments	1,726	(3,127)
Goodwill	70,266	68,540	30,949
Americas [Member]
Goodwill
Goodwill, Acquired During Period	9,921	0
Goodwill, Translation and Purchase Accounting Adjustments	(474)	(991)
Goodwill	$ 69,260	$ 59,813	$ 60,804