v3.26.1
Financial Instruments and Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Inputs, Level 3 [Member] | Preferred stock warrant liability [Member]        
Liabilities, Fair Value Disclosure [Abstract]        
Liabilities   $ 3 $ 6 $ 14
Fair Value, Recurring [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets $ 34,195 79,986 168,242  
Liabilities, Fair Value Disclosure [Abstract]        
Liabilities 1 3 6  
Fair Value, Recurring [Member] | Money Market Funds [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 17,733 39,905 49,733  
Fair Value, Recurring [Member] | U.S. Treasuries [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 16,462 40,081 118,509  
Fair Value, Recurring [Member] | Preferred stock warrant liability [Member]        
Liabilities, Fair Value Disclosure [Abstract]        
Liabilities 1 3 6  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 17,733 39,905 49,733  
Liabilities, Fair Value Disclosure [Abstract]        
Liabilities 0 0 0  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 17,733 39,905 49,733  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Treasuries [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 0 0 0  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Preferred stock warrant liability [Member]        
Liabilities, Fair Value Disclosure [Abstract]        
Liabilities 0 0 0  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 16,462 40,081 118,509  
Liabilities, Fair Value Disclosure [Abstract]        
Liabilities 0 0 0  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 0 0 0  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Treasuries [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 16,462 40,081 118,509  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Preferred stock warrant liability [Member]        
Liabilities, Fair Value Disclosure [Abstract]        
Liabilities 0 0 0  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 0 0 0  
Liabilities, Fair Value Disclosure [Abstract]        
Liabilities 1 3 6  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 0 0 0  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. Treasuries [Member]        
Assets, Fair Value Disclosure [Abstract]        
Assets 0 0 0  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Preferred stock warrant liability [Member]        
Liabilities, Fair Value Disclosure [Abstract]        
Liabilities $ 1 $ 3 $ 6