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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2020
Income Tax Disclosure [Abstract] |
Components of Income (Loss) Before Provision (Benefit) for Income Taxes | The components of the Company’s income (loss) before provision (benefit) for income taxes are as follows:
|  | Years ended December 31, |
(amounts in thousands) |  | 2020 |  |  | 2019 |  |  | 2018 |
United States |  | $ | (6,464 | ) |  | $ | 22,553 |  |  | $ | 40,245 |
Foreign |  |  | 1,184 |  |  |  | 1,719 |  |  |  | 210 |
Income (loss) before provision (benefit) for income taxes |  | $ | (5,280 | ) |  | $ | 24,272 |  |  | $ | 40,455 |
Components of Provisions (Benefit) for Income Taxes | The provision (benefit) for income taxes consists of the following:
|  | Years ended December 31, |
(amounts in thousands) |  | 2020 |  |  | 2019 |  |  | 2018 |
Current tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | (74 | ) |  | $ | (330 | ) |  | $ | — |
State |  |  | 198 |  |  |  | 136 |  |  |  | (40 | )
Foreign |  |  | 381 |  |  |  | 560 |  |  |  | 171 |
Total current tax expense |  |  | 505 |  |  |  | 366 |  |  |  | 131 |
Deferred tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | 309 |  |  |  | 3,497 |  |  |  | (9,774 | )
State |  |  | (193 | ) |  |  | (396 | ) |  |  | (1,630 | )
Foreign |  |  | (72 | ) |  |  | (145 | ) |  |  | (117 | )
Total deferred tax expense (benefit) |  |  | 44 |  |  |  | 2,956 |  |  |  | (11,521 | )
Income tax expense (benefit) |  | $ | 549 |  |  | $ | 3,322 |  |  | $ | (11,390 | )
Components of Deferred Tax Assets and Liabilities | The components of deferred tax assets and liabilities consist of the following:
(amounts in thousands) |  | As of December 31, |
Deferred tax assets (liabilities) |  | 2020 |  |  | 2019 |
Accrued expenses |  | $ | 8,346 |  |  | $ | 7,981 |
Net operating loss and credit carryforward |  |  | 20,145 |  |  |  | 20,087 |
Allowance, reserves and other |  |  | 1,381 |  |  |  | 1,984 |
Stock-based compensation |  |  | 3,379 |  |  |  | 3,257 |
Lease liability |  |  | 2,427 |  |  |  | 1,627 |
Deferred tax assets |  |  | 35,678 |  |  |  | 34,936 |
Property, plant, and equipment |  |  | (4,805 | ) |  |  | (2,961 | )
Intangible amortization |  |  | (14,292 | ) |  |  | (16,192 | )
Right-of-use asset |  |  | (2,139 | ) |  |  | (1,418 | )
Deferred tax liabilities |  |  | (21,236 | ) |  |  | (20,571 | )
Total |  | $ | 14,442 |  |  | $ | 14,365 |
Reconciliation of the Federal Statutory Income Tax Rate to the Effective Income Tax Rate | Reconciliation of the federal statutory income tax rate to the effective income tax rate for the years ended December 31, 2020, 2019 and 2018 is as follows:
|  | Years ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
U.S. Statutory rate |  |  | 21.00 | % |  |  | 21.00 | % |  |  | 21.00 | %
State income taxes, net of federal benefit |  |  | (3.86 | ) |  |  | 3.70 |  |  |  | (3.73 | )
Stock-based compensation |  |  | (16.80 | ) |  |  | (0.81 | ) |  |  | (45.01 | )
R&D credit, net of reserve |  |  | (8.11 | ) |  |  | (8.97 | ) |  |  | (1.39 | )
Other |  |  | (2.62 | ) |  |  | (1.24 | ) |  |  | 0.98 |
Effective income tax rate |  | (10.39)% |  |  |  | 13.68 | % |  | (28.15)% |
Summary of Reconciliation of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amount of unrecognized tax benefit is as follows:
(amounts in thousands) |  | December 31, |
Reconciliation of liability for unrecognized tax benefits |  | 2020 |  |  | 2019 |  |  | 2018 |
Balance at beginning of period |  | $ | 1,889 |  |  | $ | 1,294 |  |  | $ | 1,062 |
Additions based on tax positions related to current year |  |  | 70 |  |  |  | 595 |  |  |  | 232 |
Reductions based on tax positions related to prior year |  |  | (181 | ) |  |  | — |  |  |  | — |
Additions based on tax positions related to prior year |  |  | 154 |  |  |  | — |  |  |  | — |
Balance at end of period |  | $ | 1,932 |  |  | $ | 1,889 |  |  | $ | 1,294 |

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