Share-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted ( in shares)	0	0	0	0
Total stock-based compensation expense	$ 2.8	$ 2.3	$ 7.4	$ 6.6
Estimated total compensation expense	$ 19.0		$ 19.0
Expiration period in years			4 years
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted ( in shares)	0	0	300,000	400,000
Granted, Units fair value			$ 5.3	$ 5.9
Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted ( in shares)			200,000	300,000
Granted, Units fair value			$ 3.5	$ 4.1
Service period in years			3 years