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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2021
Income Tax Disclosure [Abstract] |
Schedule of Income (Loss) before Income Tax, Domestic and Foreign | The components of loss before provision for income taxes were as follows:
| Years Ended December 31,
(in thousands) | 2021 |  | 2020 |  | 2019
United States | $ | (46,241) |  |  | $ | (35,542) |  |  | $ | (52,685) |
Foreign | 8,528 |  |  | 4,141 |  |  | 1,552 |
Loss before provision for income taxes | $ | (37,713) |  |  | $ | (31,401) |  |  | $ | (51,133) |
Schedule of Components of Provision for Income Taxes | The components of the provision for income taxes were as follows:
| Years Ended December 31,
(in thousands) | 2021 |  | 2020 |  | 2019
Current tax benefit (expense) |  |  |  |  |
Federal | $ | — |  |  | $ | 2 |  |  | $ | — |
State | (257) |  |  | (132) |  |  | (19) |
Foreign | (1,650) |  |  | (1,019) |  |  | (240) |
Total current tax expense | (1,907) |  |  | (1,149) |  |  | (259) |
Deferred tax benefit (expense) |  |  |  |  |
Federal | — |  |  | — |  |  | — |
State | — |  |  | — |  |  | — |
Foreign | 864 |  |  | (14) |  |  | — |
Total deferred tax benefit (expense) | 864 |  |  | (14) |  |  | — |
Provision for income taxes | $ | (1,043) |  |  | $ | (1,163) |  |  | $ | (259) |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation at the applicable federal statutory rate to the Company’s effective income tax rate were as follows:
| Years Ended December 31,
| 2021 |  | 2020 |  | 2019
Federal income taxes at statutory rate | 21.00 % |  | 21.00 % |  | 21.00 %
State income tax, net of federal benefit | 11.37 |  |  | 2.93 |  |  | 3.09 |
Increase in valuation allowance | (66.51) |  |  | (26.26) |  |  | (25.27) |
Stock-based compensation | 31.08 |  |  | — |  |  | — |
Other | 0.29 |  |  | (1.37) |  |  | 0.67 |
Effective income tax rate | (2.77) % |  | (3.70) % |  | (0.51) %
Schedule of Deferred Tax Assets and Liabilities | The tax effects of the temporary differences and carryforwards that give rise to deferred tax assets were as follows:
| As of December 31,
(in thousands) | 2021 |  | 2020
Deferred tax assets |  |  |
Net operating loss carryforwards | $ | 67,253 |  |  | $ | 45,531 |
Accrued expenses | 2,561 |  |  | 1,328 |
Stock-based compensation | 4,272 |  |  | 1,535 |
Operating lease liabilities | 642 |  |  | 1,107 |
Other | 1,865 |  |  | 738 |
Gross deferred tax assets | 76,593 |  |  | 50,239 |
Deferred tax liabilities |  |  |
Fixed assets and intangible assets | (112) |  |  | (223) |
Operating lease right-of-use assets | (485) |  |  | (825) |
Other | (848) |  |  | — |
Gross deferred tax liabilities | (1,445) |  |  | (1,048) |
Valuation allowance | (74,244) |  |  | (49,159) |
Net deferred tax assets | $ | 904 |  |  | $ | 32 |
Summary of Valuation Allowance | The following represents the changes in our valuation allowance for the years ended December 31, 2021, 2020, and 2019, respectively:
| Years Ended December 31,
(in thousands) | 2021 |  | 2020 | 2019
Balance at the beginning of the period | $ | 49,159 |  |  | $ | 40,913 |  | $ | 27,994 |
Charged to net income | 25,085 |  |  | 8,246 |  | 12,919 |
Balance at the end of the period | $ | 74,244 |  |  | $ | 49,159 |  | $ | 40,913 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319 + Details
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