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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2015
Income Tax Disclosure [Abstract] |
Components of Pretax Loss from Operations | The components of the pretax loss from operations for the years ended December 31, 2015, 2014 and 2013 are as follows (in thousands):
| Year Ended December 31,
| 2015 |  | 2014 |  | 2013
U.S. Domestic | $ | (90,342 | ) |  | $ | (8,106 | ) |  | $ | (9,264 | )
Foreign | (87,653 | ) |  | (3,689 | ) |  | (69,784 | )
Pretax loss from operations | $ | (177,995 | ) |  | $ | (11,795 | ) |  | $ | (79,048 | )
Components of Provision (Benefit) for Income Taxes | The components of the provision for income taxes are presented in the following table (in thousands):
| Year Ended December 31,
| 2015 |  | 2014 |  | 2013
Current income tax expense (benefit): |  |  |  |  |
Federal | $ | 221 |  |  | $ | — |  |  | $ | (21 | )
State | 149 |  |  | 145 |  |  | 186 |
Foreign | 634 |  |  | 526 |  |  | 2,525 |
Total current | 1,004 |  |  | 671 |  |  | 2,690 |
Deferred income tax (benefit) expense: |  |  |  |  |
Federal | (1,363 | ) |  | 238 |  |  | 229 |
State | (154 | ) |  | 24 |  |  | 15 |
Foreign | 1,194 |  |  | 154 |  |  | 245 |
Total deferred | (323 | ) |  | 416 |  |  | 489 |
Total income tax expense | $ | 681 |  |  | $ | 1,087 |  |  | $ | 3,179 |
Schedule of Effective Income Tax Rate Reconciliation | The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to pretax income as a result of the following differences:
| December 31,
| 2015 |  | 2014 |  | 2013
Federal statutory rate | (35.0 | )% |  | (35.0 | )% |  | (35.0 | )%
Adjustments for tax effects of: |  |  |  |  |
State taxes, net | (0.3 | ) |  | (1.1 | ) |  | (0.1 | )
Stock-based compensation | 0.3 |  |  | 6.2 |  |  | 0.5 |
Foreign taxes | 0.2 |  |  | 3.4 |  |  | 1.1 |
Tax credits | (0.3 | ) |  | (3.3 | ) |  | (0.4 | )
Deemed foreign dividend | 0.1 |  |  | — |  |  | — |
Fair market value adjustments | (1.6 | ) |  | (7.6 | ) |  | — |
Intercompany debt forgiveness and other permanent adjustments | 0.6 |  |  | 3.1 |  |  | 9.5 |
Goodwill impairment | 29.1 |  |  | — |  |  | — |
Tax rate adjustment | 0.4 |  |  | 0.4 |  |  | 0.2 |
Uncertain tax positions | (0.1 | ) |  | 5.3 |  |  | 2.7 |
Other | 3.1 |  |  | 0.2 |  |  | (0.4 | )
Valuation allowance | 3.8 |  |  | 37.5 |  |  | 25.9 |
Effective income tax rate | 0.3 | % |  | 9.1 | % |  | 4.0 | %
Significant Components of Company's Deferred Tax Assets and Liabilities | Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2015 and 2014 are as follows (in thousands):
| December 31,
| 2015 |  | 2014
Deferred tax assets: |  |  |
Allowances and reserves | $ | 955 |  |  | $ | 818 |
Accrued expenses | 2,331 |  |  | 3,674 |
Inventory reserves | 9,631 |  |  | 8,532 |
Net operating loss carryforwards | 43,427 |  |  | 41,965 |
Property and equipment | 2,420 |  |  | 1,976 |
Stock-based compensation | 2,377 |  |  | 2,168 |
Legal settlement | 11,806 |  |  | 1,204 |
Goodwill | 3,362 |  |  | — |
Income tax credit carryforwards | 3,235 |  |  | 2,218 |
Total deferred tax assets | 79,544 |  |  | 62,555 |
Valuation allowance | (63,612 | ) |  | (58,781 | )
Total deferred tax assets, net of valuation allowance | 15,932 |  |  | 3,774 |
Deferred tax liabilities: |  |  |
Investment in foreign partnership | 15,467 |  |  | — |
Intangible assets | 465 |  |  | 2,881 |
Goodwill | — |  |  | 1,518 |
Total deferred tax liabilities | 15,932 |  |  | 4,399 |
Net deferred tax assets (liabilities) | $ | — |  |  | $ | (625 | )
Summary of Changes to Unrecognized Tax Benefits | The following table summarizes the changes to unrecognized tax benefits for the years ended December 31, 2015, 2014 and 2013 (in thousands):
| Year ended December 31,
| 2015 |  | 2014 |  | 2013
Unrecognized tax benefit at the beginning of the year | 8,861 |  |  | 7,835 |  |  | 5,897 |
Additions based on tax positions related to the current year | 859 |  |  | 1,050 |  |  | 1,664 |
Additions based on tax positions related to the prior year | 1,144 |  |  | 391 |  |  | 221 |
Reductions as a result of lapse of applicable statute of limitations | (76 | ) |  | (40 | ) |  | (20 | )
Reductions as a result of foreign exchange rates and other | (429 | ) |  | (375 | ) |  | 73 |
Unrecognized tax benefits at the end of the year | $ | 10,359 |  |  | $ | 8,861 |  |  | $ | 7,835 |

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