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Income Taxes - Additional Information (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Taxes [Line Items] |  |  |  |  |
Provision for (benefit from) income taxes | $ 3,174,000 | $ (207,000) |  | $ (5,000) |
Unrecognized tax benefits | 12,530,000 | 3,399,000 |  | 1,623,000 | $ 796,000
Valuation allowance | 316,056,000 | 73,809,000 | [1] |  |
Increase in valuation allowance | 242,300,000 | 32,600,000 |  | 22,100,000 |
Income tax interest and penalties | 0 | 0 |  | $ 0 |
Net operating loss carryforwards | 277,453,000 | $ 72,332,000 | [1] |  |
Foreign net operating loss carryforwards | 59,100,000 |  |  |  |
Federal [Member] |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Federal NOLs carryover | 1,096,700,000 |  |  |  |
Net operating loss carryforrwards | 1,096,700,000 |  |  |  |
Research tax credit carryforwards | 28,200,000 |  |  |  |
State [Member] |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Federal NOLs carryover | 559,600 |  |  |  |
Net operating loss carryforrwards | 559,600 |  |  |  |
Research tax credit carryforwards | $ 13,600,000 |  |  |  |
[1] | Revised to correct for immaterial adjustments in the disclosure, which had previously understated the net operating loss carryforwards deferred tax asset, accruals and reserves deferred tax asset, and deferred contract acquisition costs deferred tax liability as of December 31, 2020 by $7.2 million, $0.9 million, and $8.1 million, respectively. These adjustments had no impact to the consolidated balance sheets, consolidated statements of operations, or consolidated statements of cash flows as of and for the years ended December 31, 2021, 2020, or 2019. The Company evaluated the effect of the errors on the Company’s notes to the consolidated financial statements in accordance with SEC Staff Accounting Bulletin No. 99, Materiality, and concluded that the adjustments were not material to the previously issued 2020 consolidated financial statements.

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