Retirement Plans (Schedule Of Amounts Recognized In The Statement Of Financial Position) (Details) - USD ($) $ in Thousands	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2014
Retirement Plans [Abstract]
Other current liabilities	$ 557	$ 557
Pension benefit liabilities	6,869	6,569
Net amount recognized	$ 7,426	$ 7,126	$ 7,157