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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Tax U.S. federal statutory rate $ (3,144) $ (29,272) $ (54,396)
State and local income tax, net of federal (national) income tax effect 836 (11,367) 1,512
Tax credits (1,288) (804) (4,763)
Sec. 162(m) limitation 1,426 633 3,386
Stock-based compensation 3,197 (185) 1,787
Other 857 654 (95)
Provision for income taxes $ 1,171 $ 647 $ 3,113
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Tax U.S. federal statutory rate 21.00% 21.00% 21.00%
State and local income tax, net of federal (national) income tax effect (5.60%) 8.20% (0.60%)
Tax credits 8.60% 0.60% 1.80%
Sec. 162(m) limitation (9.50%) (0.50%) (1.30%)
Stock-based compensation (21.40%) 0.10% (0.70%)
Other (5.70%) (0.50%) 0.00%
Provision for income taxes (7.80%) (0.50%) (1.20%)
United Kingdom      
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Foreign tax effects $ (319) $ (389) $ (160)
Change in valuation allowances 2,071 2,427 999
Other adjustments $ (77) $ 0 $ 0
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Foreign tax effects 2.10% 0.30% 0.10%
Change in valuation allowances (13.80%) (1.70%) (0.40%)
Other adjustments 0.50% 0.00% 0.00%
China      
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Foreign tax effects $ 402 $ 500 $ 3,000
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Foreign tax effects (2.70%) (0.40%) (1.20%)
Other      
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Foreign tax effects $ 233 $ 0 $ (6)
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Foreign tax effects (1.60%) 0.00% 0.00%
United States      
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Change in valuation allowances $ (3,145) $ 37,731 $ 52,716
Other adjustments $ 122 $ 719 $ (867)
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Change in valuation allowances 21.10% (27.10%) (20.20%)
Other adjustments (0.80%) (0.50%) 0.30%