Stockholders' Equity - (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	600,000
Equity-based compensation expense	$ 3.3	$ 1.9
Payment, Tax Withholding, Share-based Payment Arrangement	3.1	4.2
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	21.3
Share-based Payment Arrangement, Expense, Tax Benefit	$ 0.3	$ 0.5
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted	207,628
Grant-date fair value of awards per share	$ 37.97
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	181,000	202,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted	160,057
Grant-date fair value of awards per share	$ 40.18
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	107,000	0

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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