Note 15 - Income Taxes (Tables)

12 Months Ended

Aug. 31, 2013

Income Tax Disclosure [Abstract]

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

Years Ended August 31,	2013			2012			2011
U.S. operations	$	220,778		$	229,772		$	198,688
Non-U.S. operations		50,132			44,933			40,270
Income before income taxes	$	270,910		$	274,705		$	238,958
U.S. operations	$	61,328		$	76,020		$	58,125
Non-U.S. operations		10,945			9,876			9,787
Total provision for income taxes	$	72,273	*	$	85,896		$	67,912	**
Effective tax rate		26.7	%*		31.3	%		28.4	%**

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

Years Ended August 31,	2013			2012			2011
Current
U.S. federal	$	52,625		$	73,272		$	53,925
U.S. state and local		3,309			4,305			4,833
Non-U.S.		11,188			10,224			10,728
Total current taxes	$	67,122		$	87,801		$	69,486
Deferred
U.S. federal	$	5,036		$	(1,405	)	$	(606	)
U.S. state and local		358			(152	)		(27	)
Non-U.S.		(243	)		(348	)		(941	)
Total deferred taxes	$	5,151		$	(1,905	)	$	(1,574	)
Total provision for income taxes	$	72,273		$	85,896		$	67,912

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

Years Ended August 31,	2013			2012			2011
Tax at federal U.S. statutory tax rate		35.0	%		35.0	%		35.0	%
Increase (decrease) in taxes resulting from:
State and local taxes, net of U.S. federal income tax benefit		2.0			2.1			2.2
Foreign income at other than U.S. rates		(2.5	)		(1.9	)		(1.7	)
Domestic production activities (Section 199) deduction		(2.6	)		(2.6	)		(2.1	)
Income tax benefit from R&D tax credits		(4.1	)		(0.8	)		(4.9	)
Income tax benefits from foreign tax credits		(1.2	)		(0.5	)		(0.7	)
Other, net		0.1			0.0			0.6
Effective tax rate		26.7	%		31.3	%		28.4	%

ScheduleOfDeferredTaxAssetsTableTextBlock

At August 31,	2013			2012
Deferred tax assets
Current
Receivable reserve	$	614		$	687
Deferred rent		2,191			3,175
Deferred fees		(2	)		1,223
Net current deferred taxes	$	2,803		$	5,085
Non-current
Depreciation on property, equipment and leasehold improvements	$	6,329		$	2,498
Deferred rent		2,772			2,782
Stock-based compensation		19,828			23,395
Purchased intangible assets, including acquired technology		(8,401	)		(6,801	)
Other		1,495			1,239
Net non-current deferred taxes	$	22,023		$	23,113
Total deferred tax assets	$	24,826		$	28,198

At August 31,	2013			2012
Deferred tax liabilities (non-current)
Purchased intangible assets, including acquired technology	$	2,761		$	2,936
Stock-based compensation		(365	)		(343	)
Total deferred tax liabilities (non-current)	$	2,396		$	2,593

Summary of Income Tax Contingencies [Table Text Block]

Unrecognized income tax benefits at August 31, 2010	$	7,346
Additions based on tax positions related to the current year		1,258
Additions for tax positions of prior years		1,493
Statute of limitations lapse		(964	)
Reductions from settlements with taxing authorities		(1,929	)
Unrecognized income tax benefits at August 31, 2011	$	7,204
Additions based on tax positions related to the current year		691
Additions for tax positions of prior years		470
Statute of limitations lapse		(613	)
Reductions from settlements with taxing authorities		(2,288	)
Unrecognized income tax benefits at August 31, 2012	$	5,464
Additions based on tax positions related to the current year		1,372
Additions for tax positions of prior years		986
Statute of limitations lapse		(1,103	)
Reductions from settlements with taxing authorities		(1,284	)
Unrecognized income tax benefits at August 31, 2013	$	5,435

Summary of Income Tax Examinations [Table Text Block]

Major Tax Jurisdictions	Open Tax Years
U.S.
Federal	2010 through 2013
State (various)	2010 through 2013
Europe
France	2010 through 2013
United Kingdom	2011 through 2013