Stock Options and Restricted Stock - Summary of Activity for Restricted Stock Programs (Parenthetical) (Detail) - Restricted Shares [Member] - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value of restricted stock vested	$ 2.7	$ 2.1
Aggregate fair value of restricted stock outstanding	$ 6.8
Remaining vesting period of restricted stock	2 years 8 months 12 days