Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Components of Income Before Tax

The components of income before provision for income taxes were as follows (in thousands):

	For the Years Ended December 31,
	2012		2011		2010
Domestic	$	245,252	$	257,656	$	235,892
Foreign	76,339		49,539		26,480
Income before provision for income taxes	$	321,591	$	307,195	$	262,372

Schedule of Provision for Income Tax

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

	For the Years Ended December 31,
	2012			2011			2010
Current tax provision
Federal	$	94,423		$	39,517		$	19,619
State	10,046			2,953			4,993
Foreign	18,952			10,193			4,078
Deferred tax provision (benefit)
Federal	(582		)	54,980			55,335
State	(2,045		)	4,413			2,393
Foreign	(3,189		)	1,209			4,269
Change in valuation allowance	(3		)	(6,974		)	465
	$	117,602		$	106,291		$	91,152

Schedule of Difference Between Effective and Statutory

The Company’s effective rate differed from the statutory rate as follows:

	For the Years Ended December 31,
	2012		2011		2010
United States federal income tax rate	35.0	%	35.0	%	35.0	%
State taxes	3.5		2.8		2.9
Nondeductible stock-based compensation	1.3		0.8		0.1
United States federal and state research and development credits	(0.6	)	(2.4	)	(2.6	)
Change in state tax rates	(0.4	)	(0.1	)	0.5
Foreign earnings	(3.5	)	(2.2	)	(0.4	)
Expiration of capital loss carryforward	—		2.1		—
Disallowed officer compensation	0.6		—		—
Other	0.7		0.9		(1.0	)
Change in the deferred tax asset valuation allowance	—		(2.3	)	0.2
	36.6	%	34.6	%	34.7	%

Net Deferred Tax and Valuation Allowance

The components of the net deferred tax asset and the related valuation allowance were as follows (in thousands):

	December 31,
	2012			2011
Net operating loss and credit carryforwards	$	15,655		$	9,323
Depreciation and amortization	5,495			30,702
Compensation costs	45,974			35,959
Other	18,542			15,530
Deferred tax assets	85,666			91,514
Acquired intangible assets	(26,293		)	(16,972		)
Internal-use software capitalized	(24,301		)	(24,165		)
Impairment loss on marketable securities	—			(15		)
Deferred tax liabilities	(50,594		)	(41,152		)
Valuation allowance	(430		)	(433		)
Net deferred tax assets	$	34,642		$	49,929

Unrecognized Tax Benefits

The following is a roll-forward of the Company’s unrecognized tax benefits (in millions):

	For the Years Ended December 31,
	2012			2011
Unrecognized tax benefits — at beginning of year	$	12.5		$	10.8
Gross increases — tax positions of prior periods	12.2			—
Gross increases — current-period tax positions	2.3			2.8
Gross decreases — tax positions of prior periods	(6.0		)	(0.8		)
Gross decreases — settlements	—			(0.3		)
Unrecognized tax benefits — at end of year	$	21.0		$	12.5