Leases (Schedule Of Future Minimum Rental Payments) (Details) - USD ($) $ in Thousands		Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2014
Operating, 2017		$ 10,914
Operating, 2018		10,864
Operating, 2019		10,840
Operating, 2020		10,754
Operating, 2021		10,030
Operating, Thereafter		63,733
Operating, Total minimum lease payments	[1]	117,135
Capital, 2017		5,051
Capital, 2018		4,448
Capital, 2019		3,596
Capital, 2020		3,256
Capital, 2021		3,134
Capital, Thereafter		7,018
Capital, Total minimum lease payments	[1]	26,503
Less amount representing interest averaging 6.2%		(5,439)
Capital, Present value of net minimum lease payments		21,064
Less amount due within one year		(3,673)
Capital, Amount due after one year		17,391	$ 20,763
Minimum operating rentals receivable under noncancelable subleases		16,800
Minimum capital rentals receivable under noncancelable subleases		600
Capital Leases, Contingent Rental Payments		$ 900	$ 1,000	$ 800
Capital Lease Obligations [Member]
Average interest rate		6.20%

[1] Minimum payments have not been reduced by future minimum rentals receivable under noncancellable operating and capital subleases of $16.8 million and $0.6 million, respectively. They also do not include contingent rentals which may be due under certain leases. Contingent rentals for capital leases amounted to $0.9 million, $1.0 million and $0.8 million in fiscal years 2016, 2015 and 2014, respectively.