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Accrued Liabilities
 6 Months Ended
Jun. 30, 2024
Payables and Accruals [Abstract]  
Accrued Liabilities Accrued Liabilities
Accrued liabilities consisted of the following at June 30, 2024 and December 31, 2023 (in thousands):
June 30, 2024December 31, 2023
Salaries, wages, payroll taxes and benefits$103,581 $129,982 
Workers’ compensation liability74,716 67,396 
Property, sales, use and other taxes64,895 62,194 
Insurance, other than workers’ compensation11,068 11,524 
Accrued interest payable17,980 19,172 
Deferred revenue14,052 98,914 
Federal and state income taxes payable— 3,437 
Accrued merger and integration expense5,468 15,113 
Other37,466 38,536 
Accrued liabilities$329,226 $446,268