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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2017
Income Tax Disclosure [Abstract] |
Schedule of Income before Income Tax, Domestic and Foreign | The following is a geographical breakdown of income (loss) before the provision for (benefit from) income taxes:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| (In thousands)
Domestic | $ | 19,889 |  |  | $ | 1,471 |  |  | $ | 51,089 |
Foreign | (20,768 | ) |  | (3,419 | ) |  | (4,845 | )
Income (loss) before provision for (benefit from) income taxes | $ | (879 | ) |  | $ | (1,948 | ) |  | $ | 46,244 |
Schedule of Components of Income Tax Expense (Benefit) | The provision for (benefit from) income taxes consists of the following:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| (In thousands)
Current: |  |  |  |  |
Federal | $ | 2,430 |  |  | $ | 6,724 |  |  | $ | 13,840 |
State | 1,852 |  |  | 1,323 |  |  | 2,475 |
Foreign | 745 |  |  | 46 |  |  | 203 |
Total current income taxes | 5,027 |  |  | 8,093 |  |  | 16,518 |
Deferred: |  |  |  |  |
Federal | (16,118 | ) |  | (3,378 | ) |  | 846 |
State | (2,612 | ) |  | (1,802 | ) |  | (379 | )
Foreign | (7,781 | ) |  | (5,464 | ) |  | (1,501 | )
Total deferred income taxes | (26,511 | ) |  | (10,644 | ) |  | (1,034 | )
Total provision for (benefit from) income taxes | $ | (21,484 | ) |  | $ | (2,551 | ) |  | $ | 15,484 |
Schedule of Effective Income Tax Rate Reconciliation | The provision for (benefit from) income taxes differs from the amount computed by applying the statutory federal tax rate as follows:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| (In thousands)
U.S. federal tax provision at statutory rate | $ | (308 | ) |  | $ | (682 | ) |  | $ | 16,181 |
State taxes | 19 |  |  | (311 | ) |  | 1,365 |
Non-deductible expenses | 1,373 |  |  | 1,212 |  |  | 551 |
Acquisition costs | — |  |  | 845 |  |  | 239 |
Share-based compensation expense | 39 |  |  | 1,941 |  |  | 748 |
Research tax credits | (3,233 | ) |  | (2,075 | ) |  | (1,324 | )
Domestic production deduction | (621 | ) |  | (890 | ) |  | (1,133 | )
Gain on investment | — |  |  | — |  |  | (1,205 | )
Tax audit settlement | — |  |  | (2,499 | ) |  | — |
Foreign rate differential | 938 |  |  | (154 | ) |  | 123 |
Stock option tax benefit | (5,926 | ) |  | — |  |  | — |
One-time Impact of the Tax Act | (13,391 | ) |  | — |  |  | — |
Other | (374 | ) |  | 62 |  |  | (61 | )
Total provision for (benefit from) income taxes | $ | (21,484 | ) |  | $ | (2,551 | ) |  | $ | 15,484 |
Schedule of Deferred Tax Assets and Liabilities | Significant components of the Company's deferred tax assets (liabilities) are as follows:
| December 31, 2017 |  | December 31, 2016
| (In thousands)
Deferred tax assets (liabilities): |  |  |
Deferred revenue | $ | 6,345 |  |  | $ | 5,857 |
Stock compensation | 4,460 |  |  | 6,451 |
Inventory related items | 2,441 |  |  | 2,915 |
Tax credit carry forwards | 9,349 |  |  | 4,871 |
Reserves and accruals | 3,960 |  |  | 4,675 |
Loss carry forwards | 8,643 |  |  | 8,077 |
Other, net | 1,307 |  |  | 847 |
Total net deferred tax assets | 36,505 |  |  | 33,693 |
Intangibles | (36,780 | ) |  | (57,427 | )
Depreciation and amortization | (14,338 | ) |  | (20,071 | )
Prepaid expenses | (4,512 | ) |  | (3,746 | )
Total deferred tax liabilities | (55,630 | ) |  | (81,244 | )
Net deferred tax liabilities | $ | (19,125 | ) |  | $ | (47,551 | )
Schedule of Unrecognized Tax Benefits | The aggregate change in the balance of gross unrecognized tax benefits, which excludes interest and penalties, for the three years ended December 31, 2017 is as follows:
| (In thousands)
Year Ended December 31, 2014 | $ | 8,485 |
Increases related to tax positions taken during a prior period | 37 |
Decreases related to tax positions taken during the prior period | (895 | )
Increases related to tax positions taken during the current period | 1,807 |
Decreases related to settlements | — |
Decreases related to expiration of statute of limitations | (284 | )
Year Ended December 31, 2015 | 9,150 |
Increases related to tax positions taken during a prior period | 244 |
Decreases related to tax positions taken during the prior period | (1,980 | )
Increases related to tax positions taken during the current period | 6,724 |
Decreases related to settlements | (2,178 | )
Decreases related to expiration of statute of limitations | (344 | )
Year Ended December 31, 2016 | 11,616 |
Increases related to tax positions taken during a prior period | 503 |
Decreases related to tax positions taken during the prior period | (1,782 | )
Increases related to tax positions taken during the current period | 805 |
Decreases related to settlements | — |
Decreases related to expiration of statute of limitations | (401 | )
Year Ended December 31, 2017 | $ | 10,741 |

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