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Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Operating Loss Carryforwards [Line Items]    
Valuation allowance $ 143,888,000 $ 141,628,000
Valuation allowance increase (decrease) 2,300,000 (7,900,000)
Income tax estimated dividend withholding tax 400,000  
Income tax benefit recognized related to uncertain tax positions 0 0
Interest expense related to uncertain tax positions 0 0
Liability related to unrecognized tax benefits 0 0
Estimated taxable loss 1,238,000 $ (14,369,000)
Taxable loss related to legislation change 12,400,000  
Domestic Tax Authority    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards 374,000,000.0  
Operating loss carryforwards, not subject to expiration 119,600,000  
Research and development tax credit carryforwards 11,700,000  
California Franchise Tax Board    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards 64,800,000  
Research and development tax credit carryforwards 11,900,000  
Foreign Tax Authority    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards $ 0