Income Taxes (Components Of Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2012
Income Taxes [Abstract]
Federal, Current	$ 16,580	$ 16,741	$ 17,851
State, Current	3,490	2,688	3,892
Current	20,070	19,429	21,743
Federal, Deferred	5,328	439	180
State, Deferred	450	(270)	(46)
Deferred	5,778	169	134
Provision for income taxes	$ 25,848	$ 19,598	$ 21,877

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.