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Stock-Based Compensation - Summarized Activity of Stock Options (Detail) - Stock Option
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
$ / shares
shares
Number of Shares  
Outstanding at beginning of period (shares) | shares 90
Granted (shares) | shares 150
Exercised (in shares) | shares (56)
Cancelled/expired/forfeited (in shares) | shares (1)
Outstanding at end of period (shares) | shares 183
Weighted- Average Exercise Price  
Outstanding at beginning of period (USD per share) | $ / shares $ 23.62
Granted (USD per share) | $ / shares 61.73
Exercised (USD per share) | $ / shares 23.62
Cancelled/expired/forfeited (USD per share) | $ / shares 16.46
Outstanding at end of period (USD per share) | $ / shares $ 54.73
Weighted-Average Remaining Contractual Term and Aggregate Intrinsic Value  
Outstanding at end of period, weighted-average remaining contractual term (in years) 7 years 8 months 12 days
Outstanding at end of period, aggregate intrinsic value | $ $ 4.0
Exercisable at end of period, number of options (in shares) | shares 34
Exercisable at end of period, weighted-average exercise price (USD per share) | $ / shares $ 23.62
Exercisable at end of period, weighted-average remaining contractual term 1 year 2 months 12 days
Exercisable at end of period, aggregate intrinsic value | $ $ 1.8