Leases (Schedule Of Future Lease Payments Under Prior Standard) (Details) $ in Thousands	Aug. 31, 2019 USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2020	$ 22,463
2021	18,022
2022	9,923
2023	5,184
2024	4,083
Thereafter	6,023
Total minimum lease payments	65,698
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2020	792
2021	812
2022	781
2023	604
2024	106
Total minimum lease payments	3,095
Less: interest	124
Present value of minimum lease payments	2,971
Less: current maturities	765
Present value of minimum lease payments less current maturities	$ 2,206