Leases (Schedule Of Future Minimum Rental Payments) (Details) (USD $)	Aug. 31, 2014		Aug. 31, 2013	Aug. 31, 2012
Operating, 2015	$ 11,274,000
Operating, 2016	10,631,000
Operating, 2017	9,815,000
Operating, 2018	9,410,000
Operating, 2019	8,232,000
Operating, Thereafter	75,609,000
Operating, Total minimum lease payments	124,971,000	[1]
Capital, 2015	5,149,000
Capital, 2016	5,115,000
Capital, 2017	4,470,000
Capital, 2018	4,161,000
Capital, 2019	3,402,000
Capital, Thereafter	12,799,000
Capital, Total minimum lease payments	35,096,000	[1]
Less amount representing interest averaging 6.3%	(8,353,000)
Capital, Present value of net minimum lease payments	26,743,000
Less amount due within one year	(3,693,000)
Capital, Amount due after one year	23,050,000		22,458,000
Minimum operating rentals receivable under noncancelable subleases	10,600,000
Minimum capital rentals receivable under noncancelable subleases	1,600,000
Capital Leases, Contingent Rental Payments	$ 800,000		$ 800,000	$ 800,000
Capital Lease Obligations [Member]
Average interest rate	6.50%

[1] Minimum payments have not been reduced by future minimum rentals receivable under noncancelable operating and capital subleases of $10.6 million and $1.6 million, respectively. They also do not include contingent rentals which may be due under certain leases. Contingent rentals for capital leases amounted to $0.8 million in fiscal years 2014, 2013 and 2012.