Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Income (Loss) Before Income Tax Expense (Benefit)

Income (loss) before income tax expense (benefit) consists of the following for the periods shown below (in thousands):

	Year Ended December 31,
	2016			2015			2014
United States	$	(62,037	)	$	(83,432	)	$	(132,280	)
International		(42,694	)		(46,750	)		(100,947	)
Total	$	(104,731	)	$	(130,182	)	$	(233,227	)

Components of Income Tax Expense (Benefit)

Income tax expense (benefit) consists of the following for the periods shown below (in thousands):

	Year Ended December 31,
	2016			2015			2014
Current:
Federal	$	(30	)	$	(30	)	$	(132	)
State		2			(2,863	)		(16	)
Foreign		7,178			3,817			2,777
Total current tax expense		7,150			924			2,629
Deferred:
Federal		(2,809	)		(8,818	)		(6,888	)
State		(20	)		(504	)		(353	)
Foreign		(879	)		(274	)		(2,715	)
Total deferred tax expense (benefit)		(3,708	)		(9,596	)		(9,956	)
Provision for (benefit from) income taxes	$	3,442		$	(8,672	)	$	(7,327	)

Reconciliation of Federal Statutory Income Tax Provision (Benefit) to Effective Income Tax Provision

The reconciliation of federal statutory income tax provision (benefit) to our effective income tax provision is as follows (in thousands):

	Year Ended December 31,
	2016			2015			2014
Expected benefit at U.S. federal statutory rate	$	(36,656	)	$	(45,564	)	$	(81,630	)
State income taxes - net of federal benefit		2			(2,863	)		(2,681	)
Income taxed at foreign rates		20,112			18,406			33,417
Equity-based compensation		4,295			1,125			2,865
Tax reserve for uncertain tax positions		2,382			1,827			19
Change in valuation allowance		14,786			17,526			37,202
Impact of change in tax rates		69			(18	)		25
Acquisition costs		110			650			2,981
Contingent consideration		(2,781	)		—			—
Other		1,123			239			475
	$	3,442		$	(8,672	)	$	(7,327	)

Schedule of Deferred Tax Assets (Liabilities)

Our deferred tax assets (liabilities) are as follows (in thousands):

	Year Ended December 31,
	2016			2015
Deferred tax assets:
Net operating loss carryforwards	$	53,474		$	44,551
Tax credit carryforwards		52,564			47,978
Acquired intangible assets		22,714			13,524
Equity based compensation		16,087			24,930
Accrued expenses		8,605			11,593
Other accrued compensation		5,059			1,664
Charitable contributions		4,495			3,930
State taxes		3,168			2,321
Deferred revenue		481			1,309
Other		—			434
Valuation allowance		(164,907	)		(151,808	)
Net deferred tax assets	$	1,740		$	426
Deferred tax liabilities:
Deferred rent		(69	)		(675	)
Depreciation		(7,215	)		(5,777	)
Other		(247	)		—
Net deferred tax liabilities		(7,531	)		(6,452	)
Net deferred taxes	$	(5,791	)	$	(6,026	)

Summary of Net Operating Loss and Tax Credit Carryforwards

Net operating loss and tax credit carryforwards as of December 31, 2016 are as follows (in thousands):

	Amount		Expiration years
Net operating losses, federal	$	427,475	2027 - 2036
Net operating losses, state		340,766	2017 - 2036
Tax credits, federal		86,116	2030-2036
Tax credits, state		78,035	2019 - indefinite
Net operating losses, foreign		9,552	2033 - indefinite
Tax credits, foreign		548	indefinite

Schedule of Changes in Gross Unrecognized Tax Benefits

The following table reflects changes in the gross unrecognized tax benefits (in thousands):

December 31, 2013	$	133,491
Additions based on tax positions related to 2014		7,738
Additions for tax positions of prior years		171
Reductions for tax positions of prior years		(511	)
December 31, 2014	$	140,889
Additions based on tax positions related to 2015		8,876
Additions for tax positions of prior years		82
Reductions for tax positions of prior years		(2,817	)
Decreases related to settlements of prior year tax positions		(4,185	)
December 31, 2015	$	142,845
Additions based on tax positions related to 2016		9,043
Additions for tax positions of prior years		68
Reductions for tax positions of prior years		(856	)
December 31, 2016	$	151,100