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Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Payables And Accruals [Abstract] |  |
Salaries, wages, payroll taxes and benefits | $ 35,316 | $ 37,627
Workers' compensation liability | 62,179 | 70,847
Property, sales, use and other taxes | 18,559 | 10,666
Insurance, other than workers' compensation | 7,427 | 8,462
Accrued interest payable | 10,636 | 11,325
Accrued restructuring expenses | 8,314 | 14,310
Other | 23,864 | 21,767
Accrued liabilities | $ 166,295 | $ 175,004

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