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Stock-Based Compensation Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant under the stock incentive plan	2,292,883		2,292,883
Unrecognized compensation costs related to non-vested	$ 62.6		$ 62.6
Weighted-average period over which cost is expected to be recognized			2 years
Common stock, shares issued	40,890,325		40,890,325		41,121,305
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of non-option equity instruments granted during the period			182,368
Employees Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant under the stock incentive plan	92,483		92,483
Common stock, shares issued	5,229		5,229
Employees [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment arrangement, amount capitalized	$ 0.5	$ 0.4	$ 1.1	$ 0.8
Employees [Member] \| Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant date fair value per share			$ 173.59
Employees [Member] \| Performance Based Share [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of non-option equity instruments granted during the period			21,736
Number of stock option equity instruments granted during the period			46,568
Weighted-average fair value each option granted			$ 51.47
Weighted-average grant date fair value per share			$ 179.36