Note 16 - Income Taxes (Tables)

12 Months Ended

Aug. 31, 2014

Income Tax Disclosure [Abstract]

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

Years Ended August 31,	2014			2013			2012
U.S. operations	$	242,839		$	220,778		$	229,772
Non-U.S. operations		60,625			50,132			44,933
Income before income taxes	$	303,464		$	270,910		$	274,705
U.S. operations	$	81,998		$	61,328		$	76,020
Non-U.S. operations		9,923			10,945			9,876
Total provision for income taxes	$	91,921		$	72,273		$	85,896
Effective tax rate		30.3	%		26.7	%		31.3	%

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

Years Ended August 31,	2014			2013			2012
Current
U.S. federal	$	77,368		$	52,625		$	73,272
U.S. state and local		3,972			3,309			4,305
Non-U.S.		10,350			11,188			10,224
Total current taxes	$	91,690		$	67,122		$	87,801
Deferred
U.S. federal	$	547		$	5,036			(1,405	)
U.S. state and local		111			359			(152	)
Non-U.S.		(427	)		(243	)		(348	)
Total deferred taxes	$	231		$	5,151		$	(1,905	)
Total provision for income taxes	$	91,921		$	72,273		$	85,896

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

Years Ended August 31,	2014			2013			2012
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		1.8			2.0			2.1
Foreign income at other than U.S. rates		(2.9	)		(2.5	)		(1.9	)
Domestic production activities deduction		(2.1	)		(2.6	)		(2.6	)
Income tax benefit from R&D tax credits		(1.1	)		(4.1	)		(0.8	)
Income tax benefits from foreign tax credits		(0.4	)		(1.2	)		(0.5	)
Other, net		0.0			0.1			0.0
Effective tax rate		30.3	%		26.7	%*		31.3	%

Schedule of Deferred Tax Assets [Table Text Block]

At August 31,	2014			2013
Deferred tax assets
Current
Receivable reserve	$	597		$	614
Deferred rent		1,067			2,191
Other		177			(2	)
Net current deferred taxes	$	1,841		$	2,803
Non-current
Depreciation on property, equipment and leasehold improvements	$	9,831		$	6,329
Deferred rent		3,572			2,772
Stock-based compensation		18,160			19,828
Purchased intangible assets, including acquired technology		(10,750	)		(8,401	)
Other		1,564			1,495
Net non-current deferred taxes	$	22,377		$	22,023
Total deferred tax assets	$	24,218		$	24,826

At August 31,	2014			2013
Deferred tax liabilities (non-current)
Purchased intangible assets, including acquired technology	$	3,478		$	2,761
Stock-based compensation		(860	)		(365	)
Other		303			0
Total deferred tax liabilities (non-current)	$	2,921		$	2,396

Summary of Income Tax Contingencies [Table Text Block]

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
Additions based on tax positions related to the current year		921
Additions for tax positions of prior years		628
Statute of limitations lapse		(717	)
Reductions from settlements with taxing authorities		(766	)
Unrecognized income tax benefits at August 31, 2014	$	5,501

Summary of Income Tax Examinations [Table Text Block]

Major Tax Jurisdictions	Open Tax Years
U.S.
Federal	2013 through 2014
State (various)	2010 through 2014
Europe
France	2011 through 2014
United Kingdom	2012 through 2014