Income Taxes (Tables)

12 Months Ended

Nov. 30, 2012

Income Tax Disclosure [Abstract]

Income Before Provision For Income Taxes

Income before provision for income taxes consisted of the following (in thousands):

	Year Ended November 30,
	2012		2011		2010
United States	$	33,056	$	51,159	$	84,671
International	122,258		98,776		26,201
	$	155,314	$	149,935	$	110,872

Significant Components Of Provision For (Benefit From) Income Taxes

	Year Ended November 30,
	2012			2011			2010
Federal:
Current	$	29,554		$	14,619		$	25,140
Deferred	(12,231		)	2,364			(1,353		)
	17,323			16,983			23,787
State:
Current	1,078			1,925			3,425
Deferred	(2,345		)	1,341			(1,155		)
	(1,267		)	3,266			2,270
Foreign:
Current	22,919			19,490			12,314
Deferred	(5,775		)	(2,439		)	(5,970		)
	17,144			17,051			6,344
Provision for income taxes	$	33,200		$	37,300		$	32,401

Provision For Income Taxes At Rates Other Than United States Federal Statutory Tax Rate

The provision for income taxes was at rates other than the United States Federal statutory tax rate for the following reasons:

	Year Ended November 30,
	2012		2011		2010
U.S. Federal statutory rate	35.0	%	35.0	%	35.0	%
State taxes	(2.2	)	1.8		2.1
Research and development credits	(1.3	)	(2.7	)	(0.3	)
Stock option compensation	(2.1	)	1.6		0.5
Foreign income taxed at different rate	(7.5	)	(5.9	)	(7.9	)
Change in valuation allowance	—		(2.5	)	—
Domestic manufacturing incentives	(1.4	)	(1.1	)	—
Other	0.9		(1.3	)	(0.2	)
Effective tax rate	21.4	%	24.9	%	29.2	%

Components Of Deferred Tax Assets (Liabilities)

	November 30,
	2012			2011
Deferred tax assets:
Net operating loss carryforwards	$	62,616		$	46,375
Reserves, accruals and foreign related items	13,204			19,409
Credit carryforwards	18,534			14,930
Depreciation and amortization	10,073			12,760
Unrealized losses on investments	—			5,043
Deferred revenue	8,746			6,231
Translation gains/losses	5,673			6,772
Stock compensation expense	28,690			19,727
Other	94			1,374
	147,630			132,621
Deferred tax liabilities:
Intangible assets	(37,590		)	(28,390		)
Convertible debt	(26,573		)	—
Unbilled receivable	—			(4,407		)
Other	(884		)	(2,453		)
	(65,047		)	(35,250		)
Net deferred tax assets before valuation allowance	82,583			97,371
Valuation allowance	—			(5,592		)
Net deferred tax assets	$	82,583		$	91,779

Reconciliation Of Unrecognized Tax Benefits

A reconciliation of the unrecognized tax benefits for the fiscal years ended November 30, 2012 and 2011 are as follows (in thousands):

	November 30,
	2012			2011
Gross unrecognized tax benefits balance at beginning of year	$	43,619		$	35,782
Increases for tax positions of current fiscal year	8,136			8,449
Increases for tax positions of prior fiscal years	4,031			962
Lapse of statutes of limitation	(1,270		)	(1,574		)
Gross unrecognized tax benefits at end of year	54,516			43,619
Interest and penalties	881			761
Total unrecognized tax benefits balance at end of year	$	55,397		$	44,380