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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2015
Income Tax Disclosure [Abstract] |
Company’s loss from operations before income tax expense by jurisdiction | The Company’s loss from operations before income tax expense by jurisdiction are as follows (in thousands):
|  | 2015 |  | 2014 |  | 2013 |
Domestic |  | $ | (150,227) |  | $ | (76,742) |  | $ | (48,691) |
Foreign |  |  | (6,710) |  |  | (6,205) |  |  | (3,292) |
Total net loss |  | $ | (156,937) |  | $ | (82,947) |  | $ | (51,983) |
Components of The Income Tax Provision (Benefit) | The components of the income tax provision are as follows (in thousands):
|  | 2015 |  | 2014 |  | 2013 |
Current U.S. |  | $ | — |  | $ | — |  | $ | — |
Current foreign |  |  | — |  |  | — |  |  | 25 |
Deferred |  |  | — |  |  | — |  |  | — |
Net provision |  | $ | — |  | $ | — |  | $ | 25 |
Deferred Tax Assets (Liabilities) | Deferred tax assets (liabilities) consist of the following at December 31 (in thousands):
|  | 2015 |  | 2014 |
Net operating losses U.S. |  | $ | 203,284 |  | $ | 148,451 |
Net operating losses foreign |  |  | 8,360 |  |  | 6,535 |
Research tax credits |  |  | 16,491 |  |  | 11,068 |
Other |  |  | 12,903 |  |  | 9,963 |
Total deferred tax assets |  |  | 241,038 |  |  | 176,017 |
Intangibles |  |  | (2,415) |  |  | (2,773) |
Other |  |  | (1,767) |  |  | (321) |
Total deferred tax liabilities |  |  | (4,182) |  |  | (3,094) |
Net deferred tax assets |  |  | 236,856 |  |  | 172,923 |
Less valuation allowance |  |  | (236,856) |  |  | (172,923) |
Deferred tax assets, net |  | $ | — |  | $ | — |
Tax Rate Differences | The differences between the U.S. federal statutory tax rate and the Company’s effective tax rate are as follows:
|  | 2015 |  | 2014 |  | 2013 |
Statutory federal tax rate |  |  | (34) | % |  | (34) | % |  | (34) | %
State income taxes, net of federal benefit |  |  | (3) | % |  | (3) | % |  | (3) | %
Research and development and other tax credits |  |  | (3) | % |  | (2) | % |  | (7) | %
Expiration of net operating losses |  |  | 0 | % |  | 0 | % |  | 0 | %
Release of FIN 48 liability |  |  | (2) | % |  | 0 | % |  | 0 | %
Other |  |  | 1 | % |  | 2 | % |  | 3 | %
Change in valuation allowance |  |  | 41 | % |  | 37 | % |  | 41 | %
|  |  | 0 | % |  | 0 | % |  | 0 | %
Tax Return Reported Federal Net Operating Losses and Tax Credits Available | As of December 31, 2015, the Company had tax return reported federal net operating losses and tax credits available as follows (in thousands):
|  | Amount |
Federal net operating losses expiring through the year 2035 |  | $ | 551,433 |
Foreign net operating losses (no expiration) |  |  | 38,001 |
Research tax credits expiring through the year 2035 |  |  | 16,397 |
Alternative-minimum tax credit (no expiration) |  |  | 94 |
Reconciliation of Unrecognized Tax Benefits | Tabular Reconciliation of Unrecognized Tax Benefits (in thousands):
|  | Amount |
Unrecognized tax benefits as of January 1, 2014 |  | $ | 4,801 |
Gross increases — tax positions in prior period |  |  | — |
Gross decreases — tax positions in prior period |  |  | — |
Gross increases — current-period tax positions |  |  | — |
Increases (decreases) from settlements |  |  | — |
Unrecognized tax benefits as of December 31, 2014 |  | $ | 4,801 |
Gross increases — tax positions in prior period |  |  | — |
Gross decreases — tax positions in prior period |  |  | 4,587 |
Gross increases — current-period tax positions |  |  | — |
Increases (decreases) from settlements |  |  | — |
Unrecognized tax benefits as of December 31, 2015 |  | $ | 214 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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