Operating Leases (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011
Operating Leased Assets [Line Items]
Total rent expense	$ 2.2	$ 2.2	$ 2.7
Cost basis of office space available for lease	34.6
Carrying value of office space available for lease	11.7
Sublease payments made to the Company	4.2	3.2	2.4
Minimum [Member]
Operating Leased Assets [Line Items]
Operating lease term	1 year
Maximum [Member]
Operating Leased Assets [Line Items]
Operating lease term	8 years
FC Organizational Products [Member]
Operating Leased Assets [Line Items]
Lease income	$ 0.8