Annual report [Section 13 and 15(d), not S-K Item 405]

Income Taxes - Additional Information (Details)

v3.26.1
Income Taxes - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Operating Loss Carryforwards [Line Items]    
Tax at federal statutory rate 21.00% 21.10%
Increase and decrease in valuation allowance $ 11,900,000 $ (7,900,000)
Pre ownership change utilized each year value 800,000  
Research and development tax credits 5,265,000 5,086,000
Cash income tax payments incurred 117,000 0
Decrease in unrecognized tax benefits due to additional research and development credits 100,000 3,301,000
Accrued interest and penalties related to uncertain tax positions 0  
Ownership Change    
Operating Loss Carryforwards [Line Items]    
Net operating loss that can be carried forward indefinitely 35,600,000  
Federal    
Operating Loss Carryforwards [Line Items]    
Net operating losses 427,000,000 366,000,000
Net operating loss that can be carried forward indefinitely 416,400,000  
Federal | Ownership Change    
Operating Loss Carryforwards [Line Items]    
Net operating losses 35,200,000  
Research and development tax credits 10,400,000  
State    
Operating Loss Carryforwards [Line Items]    
Net operating losses 103,700,000 95,600,000
State | Research and Developmental    
Operating Loss Carryforwards [Line Items]    
Tax credit carryforward 9,500,000  
Netherlands    
Operating Loss Carryforwards [Line Items]    
Cash income tax payments incurred 100,000 $ 0
California | Ownership Change    
Operating Loss Carryforwards [Line Items]    
Net operating losses $ 254,000,000