XML 76 R66.htm IDEA: XBRL DOCUMENT v3.25.3
Fair Value Measurements - Summary of Changes Fair Values of liabilities (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]            
Issuance of pre-funded common stock warrants         $ 464 $ 505
Level 3            
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]            
Beginning Balance $ 16,763 $ 156,795 $ 163,340 $ 36,435 36,435  
Issuance of other earnout shares     126,024      
Committed equity facility - day one put option 443   443      
Committed equity facility - drawdown forward contracts (255)   (255)      
Issuance of 2023 convertible notes and related warrants       110,718    
Issuance of pre-funded common stock warrants       464    
Change in estimated fair value 3,735 15,488 120,522 24,666    
Conversion to common stock     (389,388)      
Ending Balance 20,686 172,283 20,686 172,283 163,340 36,435
Level 3 | Legacy Warrants [Member]            
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]            
Beginning Balance   7,665 14,711 3,730 3,730  
Issuance of 2023 convertible notes and related warrants       4,816    
Issuance of pre-funded common stock warrants       464    
Change in estimated fair value   90 60,345 (1,255)    
Conversion to common stock     (75,056)      
Ending Balance   7,755   7,755 14,711 3,730
Level 3 | Other Earnout Shares [Member]            
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]            
Beginning Balance 16,763          
Issuance of other earnout shares     126,024      
Change in estimated fair value 3,798   (105,463)      
Ending Balance 20,561   20,561      
Level 3 | Committed Equity Facility [Member]            
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]            
Committed equity facility - day one put option 443   443      
Committed equity facility - drawdown forward contracts (255)   (255)      
Change in estimated fair value (63)   (63)      
Ending Balance $ 125   125      
Level 3 | Pay-to-Play Convertible Notes            
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]            
Beginning Balance   16,042 15,942 14,641 14,641  
Change in estimated fair value   (65) 27,232 1,336    
Conversion to common stock     (43,174)      
Ending Balance   15,977   15,977 15,942 14,641
Level 3 | 2023 Convertible Notes            
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]            
Beginning Balance   133,088 132,687 18,064 18,064  
Issuance of 2023 convertible notes and related warrants       105,902    
Change in estimated fair value   15,463 138,471 24,585    
Conversion to common stock     $ (271,158)      
Ending Balance   $ 148,551   $ 148,551 $ 132,687 $ 18,064