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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2021
Income Tax Disclosure [Abstract] |
Schedule of Components of Loss Before Income Taxes | The components of loss before income taxes are as follows (in thousands):
|  | Years Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Domestic |  | $ | (268,499 | ) |  | $ | (195,617 | ) |  | $ | 2,538 |
Foreign |  |  | (22,184 | ) |  |  | 6,888 |  |  |  | (79,180 | )
Loss before provision for income taxes |  | $ | (290,683 | ) |  | $ | (188,729 | ) |  | $ | (76,642 | )
Schedule of Components of Provision For Income Taxes | The provision for income taxes consists of the following (in thousands):
|  | Years Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | — |  |  | $ | — |  |  | $ | — |
State |  |  | — |  |  |  | — |  |  |  | — |
Foreign |  |  | 347 |  |  |  | 360 |  |  |  | 328 |
Total current |  |  | 347 |  |  |  | 360 |  |  |  | 328 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | — |  |  |  | — |  |  |  | — |
State |  |  | — |  |  |  | — |  |  |  | — |
Foreign |  |  | — |  |  |  | — |  |  |  | — |
Total deferred |  |  | — |  |  |  | — |  |  |  | — |
Total provision for income taxes |  | $ | 347 |  |  | $ | 360 |  |  | $ | 328 |
Schedule of Reconciliation Between Statutory Federal Income Tax Rate and Effective Tax Rate | The following is the reconciliation between the statutory federal income tax rate and the Company’s effective tax rate:
| Years Ended December 31, |
| 2021 |  |  | 2020 |  |  | 2019 |
Tax at statutory federal rate |  | 21.0 | % |  |  | 21.0 | % |  |  | 21.0 | %
State tax |  | — | % |  |  | — | % |  |  | — | %
Stock-based compensation expense |  | (1.8 | )% |  |  | 2.4 | % |  |  | 6.3 | %
Benefit due to intercompany transfer of assets |  | — | % |  |  | 41.7 | % |  |  | — | %
Valuation allowance on intercompany transfer of assets |  | — | % |  |  | (41.7 | )% |  |  | — | %
Net operating losses not benefitted |  | (16.8 | )% |  |  | (23.2 | )% |  |  | (2.9 | )%
Foreign net operating losses not benefitted |  | (1.6 | )% |  |  | 0.7 | % |  |  | (21.7 | )%
Deduction limitation on executive compensation |  | (0.3 | )% |  |  | (0.8 | )% |  |  | (2.5 | )%
Other |  | (0.6 | )% |  |  | (0.3 | )% |  |  | (0.6 | )%
Total |  | (0.1 | )% |  |  | (0.2 | )% |  |  | (0.4 | )%
Schedule of Significant Components of Deferred Tax Assets | Significant components of the Company’s deferred tax assets are as follows (in thousands):
|  | December 31, |
|  | 2021 |  |  | 2020 |
Federal and state net operating loss carryforwards |  | $ | 167,135 |  |  | $ | 134,033 |
Tax credit carryforwards |  |  | 78,832 |  |  |  | 62,465 |
Foreign net operating loss carryforwards |  |  | 38,117 |  |  |  | 32,417 |
Stock-based compensation |  |  | 10,050 |  |  |  | 10,399 |
Lease obligations |  |  | 20,415 |  |  |  | 8,243 |
Reserves and accruals |  |  | 6,067 |  |  |  | 5,875 |
Deferred revenue |  |  | 20,101 |  |  |  | 13,550 |
Intangible assets |  |  | 84,625 |  |  |  | 75,915 |
Other |  |  | 825 |  |  |  | — |
Subtotal |  |  | 426,167 |  |  |  | 342,897 |
Less: Valuation allowance |  |  | (409,810 | ) |  |  | (337,824 | )
Net deferred tax assets |  |  | 16,357 |  |  |  | 5,073 |
Fixed assets |  |  | (16,357 | ) |  |  | (5,073 | )
Other |  |  | — |  |  |  | — |
Net deferred tax liabilities |  |  | (16,357 | ) |  |  | (5,073 | )
Total net deferred tax assets |  | $ | — |  |  | $ | — |
Schedule of Reconciliation of the Beginning and Ending Amounts of Unrecognized Income Tax Benefits | A reconciliation of the beginning and ending amounts of unrecognized income tax benefits during the three years ended December 31, 2021 is as follows (in thousands):
|  | Federal and State |
Balance as of December 31, 2018 |  | $ | 27,956 |
Decrease due to prior positions |  |  | (111 | )
Increase due to current year position |  |  | 4,418 |
Balance as of December 31, 2019 |  |  | 32,263 |
Decrease due to prior positions |  |  | (137 | )
Increase due to current year position |  |  | 16,448 |
Balance as of December 31, 2020 |  |  | 48,574 |
Decrease due to prior positions |  |  | (245 | )
Increase due to current year position |  |  | 8,415 |
Foreign exchange rate differential |  |  | 927 |
Balance as of December 31, 2021 |  | $ | 57,671 |

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