Leases (Schedule Of Rent Expense For Operating Leases) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2012
Leases [Abstract]
Minimum rentals	$ 12,449	$ 13,154	$ 14,555
Contingent rentals	161	93	103
Total rent expense	12,610	13,247	14,658
Operating leases, Sublease rentals	(1,905)	(1,747)	(2,851)
Net rent expense	$ 10,705	$ 11,500	$ 11,807