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Income Taxes - Summary of Components of Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 1,190,449 | $ 1,100,214
R&D credit carryforwards | 38,992 | 15
Intangible assets | 13,867 | 13,770
Accrual and other temporary differences | 64,877 | 78,535
Operating lease | 16,096 | 22,239
Stock-based compensation | 41,516 | 60,754
Capitalized research and development costs | 174,642 | 199,663
Fixed assets | 3,698 | 3,710
Gross deferred tax assets | 1,544,137 | 1,478,900
Valuation allowance | (1,528,391) | (1,453,715)
Net deferred tax assets | 15,746 | 25,185
Deferred tax liabilities: |  |
Fixed assets | (139) | (108)
Intangible assets | (5,219) | (6,532)
Operating lease | (15,185) | (21,472)
Other | (2,658) | (4,041)
Gross deferred tax liabilities | (23,201) | (32,153)
Total net deferred tax liabilities | $ (7,455) | $ (6,968)

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