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The Company, Liquidity, and Basis of Presentation (Details) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
 3 Months Ended
Aug. 08, 2025
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Accumulated deficit   $ (1,116,955)   $ (1,020,279)
Cash flows from operations   $ (62,545) $ (56,537)  
Common stock retained par value $ 0.0001 $ 0.0001   $ 0.0001
Common stock reverse split   1-for-3.2544    
Common Stock        
Common Stock, Initial public offering 22.2      
Common stock retained par value $ 45      
Proceeds from initial public offering $ 998,600      
Convertible preferred stock, shares issued upon conversion 105.8      
Common stock, share exercised 0.6      
Common Warrants        
Common stock, share exercised 1.0      
Series D-1 Preferred Stock        
Series D-1 Preferred Stock funding     $ 5,000  
IPO        
Proceeds of underwritng discounts $ 932,300      
Proceeds of commission received 57,400      
Offering costs 11,400      
Accrued interest $ 11,400      
IPO | Common Stock        
Common Stock, Initial public offering 2.9