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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Deferred tax assets:    
Net operating loss carryforwards $ 180,809 $ 171,681
Intangibles 1,958 1,400
Research and development tax credits 15,698 14,944
Research and expenditure capitalization 23,848 36,255
Accruals and reserves 25,226 16,085
Lease liability 1,413 837
Stock-based compensation 7,744 15,761
Gross deferred tax assets 256,696 256,963
Less valuation allowance (255,482) (256,270)
Net deferred tax assets 1,214 693
Deferred tax liabilities:    
Property and equipment 0 (58)
Right-of-use asset (1,110) (483)
Gross deferred tax liabilities (1,110) (541)
Deferred tax assets, net:    
Total net deferred tax assets $ 104 $ 152