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Stock-Based Compensation - Schedule of Stock Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]      
Number of Options Outstanding, Beginning Balance 19,791,000    
Number of Options, Granted 371,000 7,195,786 990,000
Number of Options, Exercised (277,000)    
Number of Options, Forfeited (2,261,000)    
Number of Options Outstanding, Ending Balance 17,624,000 19,791,000  
Number of Options, Exercisable 8,794,000    
Weighted-Average Exercise Price per Option Outstanding, Beginning Balance $ 6.25    
Weighted-Average Exercise Price per Option, Granted 5.77    
Weighted-Average Exercise Price per Option, Exercised 4.99    
Weighted-Average Exercise Price per Option, Forfeited 8.74    
Weighted-Average Exercise Price per Option Outstanding, Ending Balance 5.94 $ 6.25  
Weighted-Average Exercise Price per Option, Exercisable $ 7.09    
Weighted-Average Remaining Contractual Term, Outstanding Balance 6 years 1 month 6 days 7 years 4 months 24 days  
Weighted-Average Remaining Contractual Term, Exercisable 4 years 8 months 12 days    
Aggregate Intrinsic Value, Outstanding Balance $ 6.9 $ 15.7  
Aggregate Intrinsic Value, Exercisable $ 1.4