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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 Provision for Income Taxes | For the years ended December 31, 2021, 2020 and 2019, the income (loss) before provision for income taxes consist of the following (in thousands):
|  | Years Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Domestic |  | $ | 4,569 |  |  | $ | 7,630 |  |  | $ | 9,155 |
Foreign |  |  | 374,962 |  |  |  | (355,686 | ) |  |  | 58,151 |
Total |  | $ | 379,531 |  |  | $ | (348,056 | ) |  | $ | 67,306 |
Schedule of (Provision for) Benefit from Income Taxes | The (provision for) benefit from income taxes consist of the following (in thousands):
|  | Years Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Current income taxes: |  |  |  |  |  |  |  |  |
Federal |  | $ | (80 | ) |  | $ | (248 | ) |  | $ | (423 | )
State |  |  | (42 | ) |  |  | (151 | ) |  |  | (59 | )
Foreign |  |  | — |  |  |  | (1 | ) |  |  | 0 |
Total current income taxes |  |  | (122 | ) |  |  | (400 | ) |  |  | (482 | )
Deferred income taxes: |  |  |  |  |  |  |  |  |
Federal |  |  | (1,748 | ) |  |  | (409 | ) |  |  | 34 |
State |  |  | — |  |  |  | — |  |  |  | — |
Foreign |  |  | — |  |  |  | — |  |  |  | — |
Total deferred income taxes |  |  | (1,748 | ) |  |  | (409 | ) |  |  | 34 |
Total income tax (provision) benefit |  | $ | (1,870 | ) |  | $ | (809 | ) |  | $ | (448 | )
Schedule of Reconciliation of Income Tax Expense Computed at Statutory Corporate Income Tax Rate to Effective Income Tax Rate | A reconciliation of income tax expense computed at the statutory corporate income tax rate to the effective income tax rate for the years ended December 31, 2021, 2020 and 2019 is as follows:
|  | Years Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Income tax expense at statutory rate |  |  | 11.9 | % |  |  | 11.9 | % |  |  | 9.3 | %
State income tax, net of federal benefit |  |  | (1.0 | )% |  |  | 1.0 | % |  |  | (2.1 | )%
Nondeductible expenses |  |  | 0.7 | % |  |  | 0.1 | % |  |  | (0.1 | )%
Foreign rate differential |  |  | 0.6 | % |  |  | (0.1 | )% |  |  | 2.0 | %
Statutory to US GAAP permanent differences |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.1 | %
Stock-based compensation |  |  | (2.5 | )% |  |  | 2.3 | % |  |  | (2.0 | )%
Impact of deferred rate change |  |  | 0.0 | % |  |  | 0.0 | % |  |  | (12.2 | )%
Research credits |  |  | (4.2 | )% |  |  | 3.3 | % |  |  | (5.2 | )%
Change in valuation allowance |  |  | (5.0 | )% |  |  | (18.7 | )% |  |  | 10.9 | %
Effective income tax rate |  |  | 0.5 | % |  |  | (0.2 | %) |  |  | 0.7 | %
Schedule of Significant Components of Company's Deferred Tax Assets | Deferred taxes are recognized for temporary differences between the basis of assets and liabilities for financial statement and income tax purposes. The significant components of the Company’s deferred tax assets are comprised of the following (in thousands):
|  | Years Ended December 31, |
|  | 2021 |  |  | 2020 |
Deferred tax assets: |  |  |  |  |  |
Net operating loss carryforwards |  | $ | 47,190 |  |  | $ | 84,531 |
Accruals and reserves |  |  | 5,878 |  |  |  | 4,785 |
Operating lease liabilities |  |  | 61,476 |  |  |  | 16,782 |
Other deferred tax assets |  |  | 6,362 |  |  |  | 1,517 |
Stock-based compensation |  |  | 14,042 |  |  |  | 9,605 |
Deferred revenue |  |  | — |  |  |  | 86 |
Research credit |  |  | 37,878 |  |  |  | 19,526 |
Total deferred tax assets |  |  | 172,826 |  |  |  | 136,832 |
Less valuation allowance |  |  | (98,649 | ) |  |  | (116,640 | )
Net deferred tax assets |  |  | 74,177 |  |  |  | 20,192 |
Deferred tax liabilities: |  |  |  |  |  |
Depreciation |  |  | (28,579 | ) |  |  | (6,778 | )
Operating lease assets |  |  | (47,521 | ) |  |  | (13,776 | )
Intangible assets |  |  | (31 | ) |  |  | (31 | )
Other deferred tax liabilities |  |  | (192 | ) |  |  | (4 | )
Total deferred tax liabilities |  |  | (76,323 | ) |  |  | (20,589 | )
Long term deferred taxes |  | $ | (2,146 | ) |  | $ | (397 | )
Schedule of Aggregate Changes in Gross Unrecognized Tax Benefits | The aggregate changes in gross unrecognized tax benefits were as follows (in thousands):
|  | Years Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Balance at beginning of year |  | $ | 11,967 |  |  | $ | 5,231 |  |  | $ | 1,595 |
Increases for tax positions taken during current period |  |  | 9,911 |  |  |  | 7,004 |  |  |  | 2,754 |
Increases for tax positions taken in prior periods |  |  | — |  |  |  | — |  |  |  | 882 |
Decreases for tax positions taken during current period |  |  | — |  |  |  | — |  |  |  | — |
Decreases for tax positions taken in prior periods |  |  | (483 | ) |  |  | (268 | ) |  |  | — |
Balance at end of year |  | $ | 21,395 |  |  | $ | 11,967 |  |  | $ | 5,231 |

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