Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Components of Income Before Tax

The components of income before provision for income taxes were as follows for the years ended December 31, 2014, 2013 and 2012 (in thousands):

	2014		2013		2012
U.S.	$	408,391	$	365,821	$	245,252
Foreign	71,385		53,733		76,339
Income before provision for income taxes	$	479,776	$	419,554	$	321,591

Schedule of Provision for Income Tax

The provision for income taxes consisted of the following for the years ended December 31, 2014, 2013 and 2012 (in thousands):

	2014			2013			2012
Current tax provision:
Federal	$	153,471		$	77,671		$	94,423
State	4,978			8,034			10,046
Foreign	13,259			13,019			18,952
Deferred tax (benefit) provision:
Federal	(13,073		)	24,210			(582		)
State	(15,220		)	(1,106		)	(2,045		)
Foreign	2,442			1,869			(3,189		)
Change in valuation allowance	(29		)	2,370			(3		)
Total	$	145,828		$	126,067		$	117,602

Schedule of Difference Between Effective and Statutory

The Company’s effective rate differed from the U.S. federal statutory rate as follows for the years ended December 31, 2014, 2013 and 2012:

	2014		2013		2012
U.S. federal income tax rate	35.0	%	35.0	%	35.0	%
State taxes	2.3		3.4		3.5
Nondeductible stock-based compensation	1.4		0.8		1.3
U.S. federal and state research and development credits	(3.2	)	(3.5	)	(0.6	)
Change in state tax rates	(0.3	)	—		(0.4	)
Foreign earnings	(1.9	)	(2.6	)	(3.5	)
Disallowed officer compensation	0.1		0.1		0.6
Domestic production activities deduction	(2.2	)	(4.3	)	—
Change in the deferred tax asset valuation allowance	—		0.6		—
State software development activities	(2.4	)	—		—
Other	1.6		0.5		0.7
	30.4	%	30.0	%	36.6	%

Net Deferred Tax and Valuation Allowance

The components of the net deferred tax asset and the related valuation allowance as of December 31, 2014 and 2013 were as follows (in thousands):

	2014			2013
Accrued bonus	$	19,572		$	14,266
Deferred revenue	9,536			5,691
Deferred rent	10,518			6,738
Stock-based compensation	27,538			30,125
Net operating losses	11,466			14,392
Tax credit carryforwards	18,066			11,107
Other	7,276			5,361
Deferred tax assets	103,972			87,680
Depreciation and amortization	(14,868		)	(15,607		)
Acquired intangible assets	(40,126		)	(19,530		)
Internal-use software development costs capitalized	(39,396		)	(31,970		)
Deferred tax liabilities	(94,390		)	(67,107		)
Valuation allowance	(1,222		)	(1,251		)
Net deferred tax assets	$	8,360		$	19,322

Unrecognized Tax Benefits

The following is a rollforward of the Company’s unrecognized tax benefits for the years ended December 31, 2014, 2013 and 2012 (in thousands):

	2014			2013			2012
Balance at beginning of year	$	24,651		$	20,902		$	12,496
Gross increases — tax positions of prior periods	12,925			2,878			12,173
Gross increases — current-period tax positions	2,106			2,834			2,251
Gross decreases — tax positions of prior periods	(6,362		)	(1,213		)	(6,018		)
Gross decreases — settlements	—			(750		)	—
Balance at end of year	$	33,320		$	24,651		$	20,902