Note 15. Income Taxes (Tables)

3 Months Ended

Nov. 30, 2011

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	Three months ended November 30,
	2011			2010
U.S. operations	$	57,088		$	50,177
Non-U.S. operations		9,942			9,377
Income before income taxes	$	67,030		$	59,554
U.S. operations	$	19,363		$	15,678
Non-U.S. operations		2,123			2,275
Total provision for income taxes	$	21,486		$	17,953
Effective tax rate		32.1	%		30.1	%

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Three months ended November 30, 2011	2011				2010
Current:
U.S. federal		$	17,586			$	14,210
U.S. state and local			1,470				2,039
Non-U.S.			2,272				2,426
Total current taxes		$	21,328			$	18,675
Deferred:
U.S. federal		$	280			$	(555	)
U.S. state and local			27				(16	)
Non-U.S.			(149	)			(151	)
Total deferred taxes			158				(722	)
Total tax provision		$	21,486			$	17,953

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Three months ended November 30,	2011			2010
Income before income taxes	$	67,030		$	59,554
Provision for income taxes	$	21,486		$	17,953
Effective tax rate		32.1	% *		30.1	% **

ScheduleOfDeferredTaxAssetsTableTextBlock

	Nov 30, 2011			Aug 31, 2011
Deferred tax assets
Current
Receivable reserve	$	725		$	736
Deferred rent		3,096			3,272
Net current deferred taxes	$	3,821		$	4,008
Non-current
Depreciation on property, equipment and leasehold improvements		1,218			2,437
Deferred rent		2,782			2,793
Stock-based compensation		19,436			18,096
Purchased intangible assets, including acquired technology		(4,862	)		(4,549	)
Other		1,396			1,389
Net non-current deferred taxes		19,970			20,166
Total deferred tax assets	$	23,791		$	24,174

ScheduleOfDeferredTaxLiabilitiesTableTextBlock

	Nov 30, 2011		Aug 31, 2011
Deferred tax liabilities (non-current)
Purchased intangible assets, including acquired technology	$	3,386	$	3,712
Total deferred tax liabilities (non-current)	$	3,386	$	3,712

Summary of Income Tax Contingencies [Table Text Block]

Unrecognized tax benefits at August 31, 2011	$	7,204
Additions based on tax positions related to the current year		214
Additions for tax positions of prior years ($0.1 million for the payment of interest)		108
Unrecognized income tax benefits at November 30, 2011	$	7,526

Summary of Income Tax Examinations [Table Text Block]

Major Tax Jurisdictions	Open Tax Years
U.S.
Federal	2009 through 2012
State (various)	2003 through 2012
Europe
France	2010 through 2012
United Kingdom	2008 through 2012