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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2020
Income Tax Disclosure [Abstract] |
Geographical Breakdown of Income (Loss) before the Provision for Income Taxes | The following is a geographical breakdown of income (loss) before the provision for income taxes:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (In thousands)
Domestic | $ | 34,714 |  |  | $ | 81,641 |  |  | $ | 46,528 |
Foreign | (5,365) |  |  | (7,708) |  |  | (10,912) |
Income (loss) before provision for income taxes | $ | 29,349 |  |  | $ | 73,933 |  |  | $ | 35,616 |
Provision For (Benefit From) Income Taxes | The provision for (benefit from) income taxes consisted of the following:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (In thousands)
Current: |  |  |  |  |
Federal | $ | 1,874 |  |  | $ | 8,006 |  |  | $ | 1,404 |
State | 1,733 |  |  | 4,549 |  |  | 1,832 |
Foreign | 647 |  |  | 1,240 |  |  | 768 |
Total current income taxes | 4,254 |  |  | 13,795 |  |  | 4,004 |
Deferred: |  |  |  |  |
Federal | (3,868) |  |  | (1,292) |  |  | 5,455 |
State | (2,494) |  |  | (1,609) |  |  | (909) |
Foreign | (737) |  |  | 1,701 |  |  | (10,663) |
Total deferred income taxes | (7,099) |  |  | (1,200) |  |  | (6,117) |
Total provision for (benefit from) income taxes | $ | (2,845) |  |  | $ | 12,595 |  |  | $ | (2,113) |
Difference between the Provision For (Benefit From) Income Taxes Compared to Income Taxes Computed at the Statutory Federal Tax Rate | 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,
| 2020 |  | 2019 |  | 2018
| (In thousands)
U.S. federal tax provision at statutory rate | $ | 6,163 |  |  | $ | 15,525 |  |  | $ | 7,479 |
State taxes | (601) |  |  | 2,258 |  |  | 651 |
Section 162(m) limitation | 2,550 |  |  | 2,279 |  |  | 738 |
Non-deductible expenses | 325 |  |  | 619 |  |  | 686 |
Uncertain tax positions | (394) |  |  | (2,472) |  |  | (412) |
Share-based compensation tax benefit | (6,929) |  |  | (7,892) |  |  | (4,005) |
Research tax credits | (4,038) |  |  | (3,805) |  |  | (3,230) |
Restructuring impact | — |  |  | 7,432 |  |  | (4,205) |
Foreign derived intangible income deduction | (204) |  |  | (449) |  |  | (349) |
Foreign rate differential | (102) |  |  | (1,424) |  |  | 561 |
Other | 385 |  |  | 524 |  |  | (27) |
Total provision for (benefit from) income taxes | $ | (2,845) |  |  | $ | 12,595 |  |  | $ | (2,113) |
Significant Components of Deferred Tax Assets (Liabilities) | Significant components of the Company’s deferred tax assets (liabilities) were as follows:
| December 31,
| 2020 |  | 2019
| (In thousands)
Deferred tax assets (liabilities): |  |  |
Deferred revenues | $ | 5,910 |  |  | $ | 4,129 |
Share-based compensation | 8,094 |  |  | 6,483 |
Inventory-related items | 4,953 |  |  | 3,507 |
Tax credit carryforwards | 12,105 |  |  | 13,472 |
Reserves and accruals | 8,160 |  |  | 5,712 |
Loss carryforwards | 8,461 |  |  | 9,484 |
Lease liability | 15,465 |  |  | 15,471 |
Other, net | 1,578 |  |  | 543 |
Gross deferred tax assets | 64,726 |  |  | 58,801 |
Valuation allowance | (1,199) |  |  | (1,186) |
Total net deferred tax assets | 63,527 |  |  | 57,615 |
Intangibles | (22,010) |  |  | (18,941) |
Depreciation and amortization | (36,528) |  |  | (35,941) |
Prepaid expenses | (15,654) |  |  | (13,395) |
Right-of-use assets | (13,949) |  |  | (14,286) |
Total deferred tax liabilities | (88,141) |  |  | (82,563) |
Net deferred tax liabilities | $ | (24,614) |  |  | $ | (24,948) |
Change in the Balance of Gross 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, 2020 was as follows:
| (In thousands)
Balance as of December 31, 2017 | $ | 10,741 |
Increases related to tax positions taken during a prior period | 19 |
Decreases related to tax positions taken during the prior period | (1,257) |
Increases related to tax positions taken during the current period | 870 |
Decreases related to settlements | — |
Decreases related to expiration of statute of limitations | (412) |
Balance as of December 31, 2018 | 9,961 |
Increases related to tax positions taken during a prior period | 10 |
Decreases related to tax positions taken during the prior period | (6) |
Increases related to tax positions taken during the current period | 9,282 |
Decreases related to settlements | — |
Decreases related to expiration of statute of limitations | (2,472) |
Balance as of December 31, 2019 | 16,775 |
Increases related to tax positions taken during a prior period | 88 |
Decreases related to tax positions taken during the prior period | — |
Increases related to tax positions taken during the current period | 2,294 |
Decreases related to settlements | — |
Decreases related to expiration of statute of limitations | (911) |
Balance as of December 31, 2020 | $ | 18,246 |

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