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Accrued Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2021
Payables And Accruals [Abstract] |
Summary of Accrued Liabilities | Accrued liabilities consisted of the following at September 30, 2021 and December 31, 2020 (in thousands):
| September 30, 2021 |  |  | December 31, 2020 |
Salaries, wages, payroll taxes and benefits | $ | 38,046 |  |  | $ | 37,627 |
Workers' compensation liability |  | 62,428 |  |  |  | 70,847 |
Property, sales, use and other taxes |  | 19,572 |  |  |  | 10,666 |
Insurance, other than workers' compensation |  | 7,686 |  |  |  | 8,462 |
Accrued interest payable |  | 10,101 |  |  |  | 11,325 |
Accrued restructuring expenses |  | 7,884 |  |  |  | 14,310 |
Other |  | 21,411 |  |  |  | 21,767 |
Accrued liabilities | $ | 167,128 |  |  | $ | 175,004 |

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