Other Current Liabilities (Schedule Of Other Liabilities Current) (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Aug. 31, 2017
Other Liabilities Disclosure [Abstract]
Compensation and benefits	$ 17,850	$ 18,926
Warranties	7,109	8,411
Deferred revenues	6,337	6,166
Dealer related liabilities	3,057	3,500
Customer deposits	2,591	4,096
Tax related liabilities	1,293	2,813
Accrued environmental liabilities	1,264	2,095
Other	7,434	9,112
Total other current liabilities	$ 46,935	$ 55,119