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Summary of Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Payables And Accruals [Abstract]    
Salaries, wages, payroll taxes and benefits $ 28,153 $ 57,615
Workers' compensation liability 74,700 81,112
Property, sales, use and other taxes 26,227 22,404
Insurance, other than workers' compensation 9,186 9,218
Accrued interest payable 11,904 12,021
Accrued restructuring expenses 7,829  
Other 32,373 37,480
Accrued liabilities $ 190,372 $ 219,850