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

Convertible Redeemable Preferred Stock and Stockholders' Equity - April 2024 Issuances of Common Stock and Common Stock Warrants (Details)

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Convertible Redeemable Preferred Stock and Stockholders' Equity - April 2024 Issuances of Common Stock and Common Stock Warrants (Details) - USD ($)
$ / shares in Units, $ in Millions
Apr. 30, 2024
Apr. 26, 2024
Apr. 23, 2024
Apr. 19, 2024
Apr. 17, 2024
Dec. 31, 2025
Dec. 29, 2025
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Aggregate shares issued upon exercise of warrants           1  
Warrants exercise price (in dollar per share)             $ 5
Initial April 2024 Registered Direct Offering and Concurrent Private Placement              
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Gross proceeds       $ 0.8      
Placement agent fees and other offering expenses       $ 0.2      
Initial April 2024 Registered Direct Offering              
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Aggregate share issued         225,834    
Price per share         $ 3.321    
Initial April 2024 Concurrent Private Placement              
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Aggregate shares issued upon exercise of warrants         225,834    
Warrants exercise price (in dollar per share)         $ 3.196    
Second April 2024 Registered Direct Offering and Concurrent Private Placement              
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Gross proceeds     $ 1.9        
Placement agent fees and other offering expenses     $ 0.3        
Second April 2024 Registered Direct Offering              
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Aggregate share issued       361,904      
Price per share       $ 5.25      
Second April 2024 Concurrent Private Placement              
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Aggregate shares issued upon exercise of warrants       542,856      
Warrants exercise price (in dollar per share)       $ 5.06      
Third April 2024 Registered Direct Offering and Concurrent Private Placement              
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Gross proceeds $ 2.4            
Placement agent fees and other offering expenses $ 0.3            
Third April 2024 Registered Direct Offering              
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Aggregate share issued   418,845          
Price per share   $ 5.73          
Third April 2024 Concurrent Private Placement              
Convertible Redeemable Preferred Stock and Stockholders' Equity              
Aggregate shares issued upon exercise of warrants   418,845          
Warrants exercise price (in dollar per share)   $ 5.6