Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of components of income (loss) before provision for (benefit from) income taxes

The components of loss before provision for (benefit from) income taxes during the three years ended December 31, 2017 consisted of the following:

	2017			2016			2015
	(in thousands)
United States	$	330,340		$	(147,860	)	$	(272,326	)
Foreign	(346,029		)	80,494			(285,474		)
Loss before (benefit from) provision for income taxes	$	(15,689	)	$	(67,366	)	$	(557,800	)

Schedule of components of provision for (benefit from) income taxes

The components of the provision for (benefit from) income taxes during the three years ended December 31, 2017 consisted of the following:

	2017			2016			2015
	(in thousands)
Current taxes:
United States	$	11,559		$	(3,821	)	$	25,623
Foreign	3,576			1,794			831
State	5,025			1,836			3,629
Total current taxes	$	20,160		$	(191	)	$	30,083
Deferred taxes:
United States	$	(113,805	)	$	18,659		$	497
Foreign	(3,222		)	(3,359		)	(355		)
State	(10,457		)	1,556			156
Total deferred taxes	$	(127,484	)	$	16,856		$	298
(Benefit from) provision for income taxes	$	(107,324	)	$	16,665		$	30,381

Reconciliation of the provision for (benefit from) income taxes

A reconciliation of the provision for (benefit from) income taxes as computed by applying the U.S. federal statutory rate of 35% to the provision for (benefit from) income taxes during the three years ended December 31, 2017 is as follows:

	2017			2016			2015
	(in thousands)
Loss before (benefit from) provision for income taxes	$	(15,689	)	$	(67,366	)	$	(557,800	)
Expected benefit from income taxes	(5,491		)	(23,578		)	(195,230		)
State taxes, net of federal benefit	4,742			3,621			3,800
Foreign income tax rate differential	77,801			21,346			47,402
Tax credits	(49,088		)	(47,773		)	(55,696		)
Provision for (benefit from) income taxes attributable to valuation allowances	(584,917		)	14,837			226,169
Permanent items	21,825			24,749			5,817
Rate change	575,192			12,836			(1,224		)
Stock compensation (benefit) shortfalls and cancellations	(21,453		)	4,162			951
Tax attribute expiration	—			9,947			—
Deconsolidation of VIE	(126,183		)	—			—
Other	248			(3,482		)	(1,608		)
(Benefit from) provision for income taxes	$	(107,324	)	$	16,665		$	30,381

Schedule of deferred tax assets and liabilities

The components of the deferred taxes were as follows:

	As of December 31,
	2017			2016
	(in thousands)
Deferred tax assets:
Net operating loss	$	1,004,404		$	1,232,399
Tax credit carryforwards	440,429			367,402
Intangible assets	54,091			34,938
Deferred revenues	19,593			31,205
Stock-based compensation	83,196			110,446
Inventories	4,250			4,705
Accrued expenses	17,808			23,078
Construction financing lease obligation	109,354			177,735
Other	1,417			27
Gross deferred tax assets	1,734,542			1,981,935
Valuation allowance	(1,552,942		)	(1,731,186		)
Total deferred tax assets	181,600			250,749
Deferred tax liabilities:
Property and equipment	(101,019		)	(169,089		)
Acquired intangibles	(6,341		)	(134,063		)
Deferred revenue	(73,357		)	(73,357		)
Unrealized gain	(6,401		)	(7,967		)
Net deferred tax liabilities	$	(5,518	)	$	(133,727	)