Accrued Liabilities - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Salaries, wages, payroll taxes and benefits	$ 91,607	$ 129,982
Workers' compensation liability	68,365	67,396
Property, sales, use and other taxes	59,853	62,194
Insurance, other than workers' compensation	10,687	11,524
Accrued interest payable	10,241	19,172
Contract liability, current	22,016	98,914
Federal and state income taxes payable	2,055	3,437
Accrued merger and integration expenses	12,861	15,113
Other	46,299	38,536
Accrued liabilities	$ 323,984	$ 446,268