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Stock-Based Compensation - Summary of Activity Relating to Time Based and Performance Based Stock Options (Detail) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Ending balance, Outstanding Shares 11,420,766  
Stock Options [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Beginning balance, Outstanding Shares 7,788,350  
Granted, Shares 919,751  
Exercised, Shares (65,940)  
Forfeited, Shares (510,199)  
Ending balance, Outstanding Shares 8,131,962 7,788,350
Exercisable, Shares 5,934,180  
Beginning balance, Outstanding Weighted Average Exercise Price $ 77.95  
Granted, Weighted Average Exercise Price 45.76  
Exercised, Weighted Average Exercise Price 16.58  
Forfeited, Weighted Average Exercise Price 56.31  
Ending balance, Outstanding Weighted Average Exercise Price 76.17 $ 77.95
Exercisable, Weighted Average Exercise Price $ 82.73  
Outstanding, Weighted Average Remaining Life 5 years 10 months 28 days 6 years 4 months 9 days
Exercisable, Weighted Average Remaining Life 5 years  
Outstanding, Aggregate Intrinsic Value $ 371 $ 7,275
Exercisable, Aggregate Intrinsic Value $ 370