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Stock-Based Compensation - Summary of Stock Option Activity (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Options outstanding beginning balance, Shares Subject to Stock Options 5,248,682  
Granted, Shares Subject to Stock Options 1,089,200  
Exercised, Shares Subject to Stock Options (821,689)  
Forfeited, Shares Subject to Stock Options 0  
Cancelled, Shares Subject to Stock Options 0  
Options outstanding ending balance, Shares Subject to Stock Options 5,516,193 5,248,682
Options exercisable, Shares Subject to Stock Options 2,634,610  
Options outstanding beginning balance, Weighted-Average Exercise Price $ 6.79  
Granted, Weighted-Average Exercise Price 18.42  
Exercised, Weighted-Average Exercise Price 5.31  
Forfeited, Weighted-Average Exercise Price 0  
Cancelled, Weighted-Average Exercise Price 0  
Options outstanding ending balance, Weighted-Average Exercise Price 9.31 $ 6.79
Options exercisable, Weighted-Average Exercise Price $ 6.75  
Options outstanding, Weighted-Average Remaining Contractual Term 7 years 8 months 19 days 7 years 1 month 6 days
Options exercisable, Weighted-Average Remaining Contractual Term 6 years 5 months 15 days  
Options outstanding, Aggregate Intrinsic Value $ 400,998,000 $ 62,210,000
Options exercisable, Aggregate Intrinsic Value $ 198,264,000