Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012
Income Taxes [Abstract]
Balance at beginning of year	$ 5,451	$ 4,775
Additions based on tax positions related to the current year	628	834
Additions for tax positions of prior years	960	1,670
Reductions for tax positions of prior years	(3,816)	(469)
Reductions for settlements		(68)
Reductions due to statute expiration	(640)	(1,291)
Balance at end of year	$ 2,583	$ 5,451