Income Taxes (Tables)

9 Months Ended

May 31, 2012

Income Taxes [Abstract]

Schedule Of Provision (Benefit) For Income Taxes And Effective Income Tax Rate

	Three months ended May 31,						Nine months ended May 31,
	2012			2011			2012			2011
Provision (benefit) for income taxes	$	8,667		$	(2,742	)	$	13,125		$	2,195
Effective income tax rate		37.6	%		37.1	%		37.8	%		24.0	%