Workers' Compensation Claims - Summarizes Aggregate Workers' Compensation Reserve Activity (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Workers Compensation Reserve [Abstract]
Workers' compensation claims liabilities, Beginning balance	$ 158,054	$ 201,641	$ 167,763	$ 215,987
Add: claims expense accrual
Current period	3,699	3,482	7,299	7,844
Prior periods	(1,830)	(1,580)	(4,822)	(2,694)
Total claims expense incurred	1,869	1,902	2,477	5,150
Less: claim payments related to
Current period	1,565	585	2,519	765
Prior periods	8,734	11,807	18,223	29,287
Total claim payments	10,299	12,392	20,742	30,052
Change in claims incurred in excess of retention limits	6	671	132	737
Workers' compensation claims liabilities, Ending balance	$ 149,630	$ 191,822	$ 149,630	$ 191,822