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Income Tax - Major Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Deferred tax assets:        
Net operating loss carryforward $ 73,583 $ 59,413    
Research and development credit carryforward 16,092 7,869    
Stock-based compensation 32,158 14,001    
Section 174 Research and Development Capitalization 11,034 14,167    
Other 711 475    
Total deferred tax assets 133,578 95,925    
Deferred tax liabilities:        
Other (417) (337)    
Total deferred tax liabilities (417) (337)    
Net deferred tax assets before valuation allowance 133,161 95,588    
Valuation allowance (133,161) (95,588) $ (84,751) $ (64,016)
Deferred tax, net $ 0 $ 0