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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Tax Disclosure [Abstract] |
Schedule of Loss Before Income Taxes | Loss before income ta xes includes the following components:
|  | Year ended December 31,
|  | 2023 |  | 2022 |  | 2021
|  | (in thousands)
United States |  | $ | (137,240) |  |  | $ | (196,469) |  |  | $ | (224,159) |
Foreign |  | 3,931 |  |  | 5,789 |  |  | 1,531 |
Loss before income taxes |  | $ | (133,309) |  |  | $ | (190,680) |  |  | $ | (222,628) |
Schedule of Income Tax Expense (Benefit) | The income tax expense (benefit) consists of the following:
|  | Year ended December 31,
|  | 2023 |  | 2022 |  | 2021
|  | (in thousands)
Current tax provision (benefit): |  |  |  |  |  |
Federal |  | $ | — |  |  | $ | — |  |  | $ | — |
State |  | 57 |  |  | (79) |  |  | — |
Foreign |  | 622 |  |  | 173 |  |  | 322 |
Deferred tax benefit: |  |  |  |  |  |
Federal |  | — |  |  | — |  |  | (253) |
State |  | — |  |  | — |  |  | — |
Foreign |  | (900) |  |  | — |  |  | — |
Total tax expense (benefit) |  | $ | (221) |  |  | $ | 94 |  |  | $ | 69 |
Schedule of Effective Tax Rate Reconciliation | Reconciliation between the Company’s effective tax rate on income from continuing operations and the U.S. federal statutory rate is as follows:
|  | Year ended December 31,
|  | 2023 |  | 2022 |  | 2021
Provision at federal statutory tax rate |  | 21 | % |  | 21 | % |  | 21 | %
Change in valuation allowance |  | (25) |  |  | (14) |  |  | (30) |
Foreign tax rate differential |  | 1 |  |  | — |  |  | — |
Stock-based compensation |  | (4) |  |  | (9) |  |  | 2 |
Research and development credits |  | 10 |  |  | 2 |  |  | 5 |
Disallowed executive compensation |  | (3) |  |  | — |  |  | — |
Restructuring |  | — |  |  | — |  |  | 2 |
Effective tax rate |  | — | % |  | — | % |  | — | %
Schedule of Deferred Tax Assets and Liabilities | The Company’s deferred tax assets and liabilities were as follows:
|  | Year ended December 31,
|  | 2023 |  | 2022
|  | (in thousands)
Deferred tax assets: |  |  |  |
Net operating losses |  | $ | 178,149 |  |  | $ | 183,306 |
Lease liability |  | 20,137 |  |  | 23,245 |
Research and development credits |  | 38,280 |  |  | 21,383 |
Capitalized research and development |  | 45,418 |  |  | 21,032 |
Stock-based compensation |  | 11,765 |  |  | 10,429 |
Deferred revenue |  | 4,934 |  |  | 2,811 |
Reserves and accruals |  | 4,336 |  |  | 4,648 |
Other |  | 1,889 |  |  | 4,179 |
Deferred tax assets |  | 304,908 |  |  | 271,033 |
Intangible asset amortization |  | (16,310) |  |  | (21,713) |
Right-of-use asset |  | (15,322) |  |  | (18,847) |
State taxes |  | (13,032) |  |  | (10,732) |
Prepaid commissions |  | (13,868) |  |  | (11,526) |
Deferred tax liabilities |  | (58,532) |  |  | (62,818) |
Valuation allowance |  | (245,476) |  |  | (208,215) |
Net deferred tax (liabilities) assets |  | $ | 900 |  |  | $ | — |
Schedule of Unrecognized Tax Benefits | A reconciliation of the Company’s unrecognized tax benefits is as follows (in thousands):
| Year ended December 31,
| 2023 |  | 2022
Balance at beginning of year | $ | 17,337 |  |  | $ | 7,808 |
Increases related to prior year tax positions | 2,674 |  |  | 8,697 |
Decreases related to prior year tax positions | — |  |  | (751) |
Increases related to current year tax positions | 3,234 |  |  | 1,583 |
Balance at end of year | $ | 23,245 |  |  | $ | 17,337 |

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