Leases (Schedule Of Future Minimum Rental Payments) (Details) - USD ($) $ in Thousands		Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Operating, 2016		$ 11,374
Operating, 2017		10,992
Operating, 2018		11,058
Operating, 2019		10,767
Operating, 2020		10,207
Operating, Thereafter		68,998
Operating, Total minimum lease payments	[1]	123,396
Capital, 2016		5,254
Capital, 2017		5,004
Capital, 2018		4,401
Capital, 2019		3,517
Capital, 2020		3,177
Capital, Thereafter		9,883
Capital, Total minimum lease payments	[1]	31,236
Less amount representing interest averaging 6.3%		(6,796)
Capital, Present value of net minimum lease payments		24,440
Less amount due within one year		(3,677)
Capital, Amount due after one year		20,763	$ 23,050
Minimum operating rentals receivable under noncancelable subleases		9,500
Minimum capital rentals receivable under noncancelable subleases		1,400
Capital Leases, Contingent Rental Payments		$ 1,000	$ 800	$ 800
Capital Lease Obligations [Member]
Average interest rate		6.30%

[1] Minimum payments have not been reduced by future minimum rentals receivable under noncancelable operating and capital subleases of $9.5 million and $1.4 million, respectively. They also do not include contingent rentals which may be due under certain leases. Contingent rentals for capital leases amounted to $1.0 million in fiscal year 2015 and to $0.8 million in fiscal years 2014 and 2013.