v3.24.3
Stockholders' Equity - Schedule of options (Detail) - $ / shares
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2024
Dec. 31, 2023
Number          
Granted (in shares)       11,631,035 1,765,862
Weighted Average Exercise Price          
Granted (in usd per share)       $ 0.34 $ 1.17
Weighted-Average Remaining Contractual Term (in Years)          
Weighted average remaining contractual term (in years) 4 years 1 month 2 days        
Options          
Number          
Beginning balance (in shares) 8,177,499 8,327,499 8,243,437 8,243,437  
Granted (in shares) 1,900,000   150,000    
Forfeited (in shares)   (150,000) (65,938)    
Ending balance (in shares) 10,077,499 8,177,499 8,327,499 10,077,499 8,243,437
Vested options (in shares) 6,003,993     6,003,993  
Weighted Average Exercise Price          
Beginning balance (in usd per share) $ 2.42 $ 2.38 $ 2.41 $ 2.41  
Granted (in usd per share)     0.35    
Forfeited (in usd per share)   0.35 1.72    
Ending balance (in usd per share) 2.00 $ 2.42 $ 2.38 2.00 $ 2.41
Weighted average exercise price, vested and expected to vest (in usd per share) 2.30     $ 2.30  
Weighted-Average Remaining Contractual Term (in Years)          
Weighted average remaining contractual term (in years)   4 years 5 months 19 days 4 years 9 months 3 days   4 years 11 months 23 days
Weighted average remaining contractual term, granted (in years)     6 years 11 months 1 day    
Weighted average remaining contractual term, vested and exercisable (in years)       4 years 18 days  
Weighted Average Fair Value          
Beginning weighted average fair value (in usd per share) 3.61 $ 3.55 $ 3.58 $ 3.58  
Weighted average fair value, granted (in usd per share)     0.31    
Ending weighted average fair value (in usd per share) 2.95 $ 3.61 $ 3.55 2.95 $ 3.58
Weighted average fair value, vested and exercisable (in usd per share) $ 2.91     $ 2.91