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Condensed consolidated statements of stockholders' equity - USD ($)
$ in Thousands
Total
Class A Common stock
Class B Common stock
Common stock
Class A Common stock
Common stock
Class B Common stock
Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive income (loss)
Balance at beginning of period (in shares) at Dec. 31, 2024       37,729,242 5,309,529      
Balance at beginning of period at Dec. 31, 2024 $ 75,352     $ 377 $ 53 $ 550,157 $ (475,274) $ 39
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Vesting of restricted stock units (in shares)       251,707        
Vesting of restricted stock units 0     $ 3   (3)    
Issuance of Class A common stock upon exercise of common stock options (in shares)       273,385        
Issuance of Class A common stock upon exercise of common stock options 296     $ 3   293    
Issuance of Class A common stock under ESPP (in shares)       127,335        
Issuance of Class A common stock under ESPP 90     $ 1   89    
Stock-based compensation expense 1,042         1,042    
Conversion of Class B common stock to Class A common stock (in shares)       810,000 (810,000)      
Conversion of Class B common stock to Class A common stock 0     $ 8 $ (8)      
Net loss (11,263)           (11,263)  
Other comprehensive loss (26)             (26)
Balance at end of period (in shares) at Mar. 31, 2025       39,191,669 4,499,529      
Balance at end of period at Mar. 31, 2025 65,491     $ 392 $ 45 551,578 (486,537) 13
Balance at beginning of period (in shares) at Dec. 31, 2024       37,729,242 5,309,529      
Balance at beginning of period at Dec. 31, 2024 75,352     $ 377 $ 53 550,157 (475,274) 39
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net loss (23,121)              
Balance at end of period (in shares) at Jun. 30, 2025       39,560,439 4,499,529      
Balance at end of period at Jun. 30, 2025 54,545     $ 395 $ 45 552,502 (498,395) (2)
Balance at beginning of period (in shares) at Mar. 31, 2025       39,191,669 4,499,529      
Balance at beginning of period at Mar. 31, 2025 65,491     $ 392 $ 45 551,578 (486,537) 13
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Vesting of restricted stock units (in shares)       415,381        
Vesting of restricted stock units 0     $ 4   (4)    
Tax withholding on settlement of restricted stock units (in shares)       (158,908)        
Tax withholding on settlement of restricted stock units (418)     $ (2)   (416)    
Issuance of Class A common stock upon exercise of common stock options (in shares)       112,297        
Issuance of Class A common stock upon exercise of common stock options 127     $ 1   126    
Stock-based compensation expense 1,218         1,218    
Net loss (11,858)           (11,858)  
Other comprehensive loss (15)             (15)
Balance at end of period (in shares) at Jun. 30, 2025       39,560,439 4,499,529      
Balance at end of period at Jun. 30, 2025 54,545     $ 395 $ 45 552,502 (498,395) (2)
Balance at beginning of period (in shares) at Dec. 31, 2025   39,970,946 4,499,529 39,970,946 4,499,529      
Balance at beginning of period at Dec. 31, 2025 33,206     $ 400 $ 45 555,147 (522,397) 11
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Vesting of restricted stock units (in shares)       514,722        
Vesting of restricted stock units 0     $ 5   (5)    
Issuance of Class A common stock upon exercise of common stock options (in shares)       102,368        
Issuance of Class A common stock upon exercise of common stock options 116     $ 1   115    
Issuance of Class A common stock under ESPP (in shares)       58,182        
Issuance of Class A common stock under ESPP 140     $ 1   139    
Net exercise of warrant to purchase Class A common stock (in shares)       621,293        
Net exercise of warrant to purchase Class A common stock 0     $ 6   (6)    
Stock-based compensation expense 1,223         1,223    
Net loss (14,275)           (14,275)  
Other comprehensive loss (12)             (12)
Balance at end of period (in shares) at Mar. 31, 2026       41,267,511 4,499,529      
Balance at end of period at Mar. 31, 2026 20,398     $ 413 $ 45 556,613 (536,672) (1)
Balance at beginning of period (in shares) at Dec. 31, 2025   39,970,946 4,499,529 39,970,946 4,499,529      
Balance at beginning of period at Dec. 31, 2025 $ 33,206     $ 400 $ 45 555,147 (522,397) 11
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issuance of Class A common stock upon exercise of common stock options (in shares) 158,736              
Net loss $ (27,198)              
Balance at end of period (in shares) at Jun. 30, 2026   45,466,105 4,499,529 45,466,105 4,499,529      
Balance at end of period at Jun. 30, 2026 17,748     $ 455 $ 45 566,844 (549,595) (1)
Balance at beginning of period (in shares) at Mar. 31, 2026       41,267,511 4,499,529      
Balance at beginning of period at Mar. 31, 2026 20,398     $ 413 $ 45 556,613 (536,672) (1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Vesting of restricted stock units (in shares)       489,619        
Vesting of restricted stock units 0     $ 5   (5)    
Issuance of Class A common stock upon exercise of common stock options (in shares)       56,368        
Issuance of Class A common stock upon exercise of common stock options 67     $ 1   66    
Stock-based compensation expense 1,321         1,321    
Issuance of Class A common stock pursuant to Underwritten and D&O Offerings to related parties, net of issuance costs (in shares)       3,652,607        
Issuance of Class A common stock pursuant to Underwritten and D&O Offerings to related parties, net of issuance costs 4,003     $ 36   3,967    
Warrants to purchase common stock to related parties, net of issuance costs 4,882         4,882    
Net loss (12,923)           (12,923)  
Balance at end of period (in shares) at Jun. 30, 2026   45,466,105 4,499,529 45,466,105 4,499,529      
Balance at end of period at Jun. 30, 2026 $ 17,748     $ 455 $ 45 $ 566,844 $ (549,595) $ (1)