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CONDENSED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) - USD ($)
$ in Thousands
Total
Initial Public Offering [Member]
Private Placement Offering [Member]
Convertible Preferred Stock [Member]
Common Stock [Member]
Common Stock [Member]
Initial Public Offering [Member]
Common Stock [Member]
Private Placement Offering [Member]
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Initial Public Offering [Member]
Additional Paid-in Capital [Member]
Private Placement Offering [Member]
Additional Paid-in Capital [Member]
Adoption of ASU 2020-06
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Deficit [Member]
Accumulated Deficit [Member]
Adoption of ASU 2020-06
Convertible Preferred Stock, beginning balance at Dec. 31, 2023       $ 261,713                    
Convertible Preferred Stock, beginning balance (in shares) at Dec. 31, 2023       12,876,561                    
Beginning balance at Dec. 31, 2023 $ (203,105)       $ 1     $ 26,421     $ 12,317 $ 137 $ (229,664) $ (12,317)
Beginning balance (in shares) at Dec. 31, 2023         6,021,327                  
Accounting Standards Update [Extensible Enumeration] ASU 2020-06                          
Common B warrant exercises $ 6,100             6,100            
Common B warrant exercises (in shares)         634,517                  
Stock option exercises 52             52            
Stock option exercises (in shares)         7,021                  
Stock-based compensation expense 4,832             4,832            
Unrealized gain (loss) on short-term investments (79)                     (79)    
Net Income (Loss) (36,648)                       (36,648)  
Convertible Preferred Stock, ending balance at Sep. 30, 2024       $ 261,713                    
Convertible Preferred Stock, ending balance (in shares) at Sep. 30, 2024       12,876,561                    
Ending balance at Sep. 30, 2024 (228,848)       $ 1     49,722       58 (278,629)  
Ending balance (in shares) at Sep. 30, 2024         6,662,865                  
Convertible Preferred Stock, beginning balance at Jun. 30, 2024       $ 261,713                    
Convertible Preferred Stock, beginning balance (in shares) at Jun. 30, 2024       12,876,561                    
Beginning balance at Jun. 30, 2024 $ (221,213)       $ 1     47,700       (21) (268,893)  
Beginning balance (in shares) at Jun. 30, 2024         6,656,681                  
Accounting Standards Update [Extensible Enumeration] ASU 2020-06                          
Stock option exercises $ 46             46            
Stock option exercises (in shares)         6,184                  
Stock-based compensation expense 1,976             1,976            
Unrealized gain (loss) on short-term investments 79                     79    
Net Income (Loss) (9,736)                       (9,736)  
Convertible Preferred Stock, ending balance at Sep. 30, 2024       $ 261,713                    
Convertible Preferred Stock, ending balance (in shares) at Sep. 30, 2024       12,876,561                    
Ending balance at Sep. 30, 2024 (228,848)       $ 1     49,722       58 (278,629)  
Ending balance (in shares) at Sep. 30, 2024         6,662,865                  
Convertible Preferred Stock, beginning balance at Dec. 31, 2024 $ 321,373     $ 321,373                    
Convertible Preferred Stock, beginning balance (in shares) at Dec. 31, 2024 17,228,954     17,228,954                    
Beginning balance at Dec. 31, 2024 $ (245,360)       $ 1     51,311       65 (296,737)  
Beginning balance (in shares) at Dec. 31, 2024         6,667,793                  
Convertible Preferred Stock, ending balance at Jan. 31, 2025   $ 321,400       $ 57,300                
Convertible Preferred Stock, beginning balance at Dec. 31, 2024 $ 321,373     $ 321,373                    
Convertible Preferred Stock, beginning balance (in shares) at Dec. 31, 2024 17,228,954     17,228,954                    
Beginning balance at Dec. 31, 2024 $ (245,360)       $ 1     51,311       65 (296,737)  
Beginning balance (in shares) at Dec. 31, 2024         6,667,793                  
Conversion of convertible preferred stock into common stock on initial public offering       $ (321,373)                    
Conversion of convertible preferred stock into common stock on initial public offering (in shares)       (17,228,954)                    
Conversion of convertible preferred stock into common stock on initial public offering 321,373       $ 2     321,371            
Conversion of convertible preferred stock into common stock on initial public offering (in shares)         19,827,003                  
Issuance of common stock in offering, net of underwriting discounts and commissions and offering costs   $ 190,379 $ 15,591     $ 1     $ 190,378 $ 15,591        
Issuance of common stock in offering, net of underwriting discounts and commissions and offering costs (in shares)           12,475,000 1,000,000              
Reclassification of convertible preferred stock and common stock warrants into common stock on initial public offering 57,348             57,348            
Reclassification of convertible preferred stock and common stock warrants into common stock on initial public offering (in shares)         3,369,473                  
Vesting of restricted stock units (in shares)         190,222                  
Stock option exercises $ 2,793             2,793            
Stock option exercises (in shares) 462,107       462,107                  
Stock-based compensation expense $ 12,081             12,081            
Unrealized gain (loss) on short-term investments 289                     289    
Net Income (Loss) $ (59,734)                       (59,734)  
Convertible Preferred Stock, ending balance (in shares) at Sep. 30, 2025 0                          
Ending balance at Sep. 30, 2025 $ 294,760       $ 4     650,873       354 (356,471)  
Ending balance (in shares) at Sep. 30, 2025         43,991,598                  
Beginning balance at Jun. 30, 2025 301,633       $ 4     643,742       149 (342,262)  
Beginning balance (in shares) at Jun. 30, 2025         43,465,136                  
Vesting of restricted stock units (in shares)         85,732                  
Stock option exercises 2,653             2,653            
Stock option exercises (in shares)         440,730                  
Stock-based compensation expense 4,478             4,478            
Unrealized gain (loss) on short-term investments 205                     205    
Net Income (Loss) $ (14,209)                       (14,209)  
Convertible Preferred Stock, ending balance (in shares) at Sep. 30, 2025 0                          
Ending balance at Sep. 30, 2025 $ 294,760       $ 4     $ 650,873       $ 354 $ (356,471)  
Ending balance (in shares) at Sep. 30, 2025         43,991,598