Leases (Schedule Of Rent Expense For Operating Leases) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Leases [Abstract]
Minimum rentals	$ 12,659	$ 12,449	$ 13,154
Contingent rentals	174	161	93
Total rent expense	12,833	12,610	13,247
Operating leases, Sublease rentals	(2,235)	(1,905)	(1,747)
Net rent expense	$ 10,598	$ 10,705	$ 11,500