Related Party Transactions (Components Of Other Current And Other Long-Term Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Aug. 31, 2017
Other Assets [Line Items]
Other current assets	$ 10,893	$ 9,387
Other long-term assets	12,935	16,005
FCOP [Member]
Other Assets [Line Items]
Other current assets	1,123	1,020
Other long-term assets	411	727
Other assets	$ 1,534	$ 1,747