Stockholders' Equity - (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
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	700,000
Equity-based compensation expense	$ 1.9	$ 0.7
Share-based Payment Arrangement, Expense, Tax Benefit	0.5	0.2
Payment, Tax Withholding, Share-based Payment Arrangement	4.2	$ 1.5
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 21.2
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted	188,074
Grant-date fair value of awards per share	$ 38.20
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted	196,451
Grant-date fair value of awards per share	$ 40.47

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

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