Income Taxes (Schedule Of Unrecognized Tax Benefits Roll Forward)(Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Income Taxes [Abstract]
Unrecognized Tax Benefits, Beginning balance	$ 1,565	$ 1,112
Increase for positions taken in current year	2	78
Increase for positions taken in prior years	61	448
Decrease for positions taken in prior years	(44)
Settlements with taxing authorities	(42)
Reduction resulting from lapse of applicable statute of limitations	(173)	(87)
Other increases (decreases)	(60)	14
Unrecognized Tax Benefits, Ending balance	$ 1,309	$ 1,565