Stock Options and Restricted Stock - Summary of Activity for Stock Option Programs (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Aggregate intrinsic value for option exercised			$ 0.1
Aggregate intrinsic value of option outstanding	$ 1.1	$ 1.1
Aggregate intrinsic value of option vested	1.0	$ 1.0
Remaining contractual life of option outstanding		5 years 7 months 6 days
Remaining contractual life of option vested		5 years 6 months
Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Aggregate intrinsic value for option exercised	$ 0.1	$ 0.1