Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities (Details)

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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Accrued Liabilities.    
Salaries, wages, and commissions $ 56,480 $ 34,584
Insurance liabilities 22,203 22,007
Employee tax-related liabilities 12,680 12,603
Deferred revenue 12,768 6,542
Sales & property taxes 8,787 6,939
Customer rebates 6,348 6,191
Interest payable on long-term debt 823 3,924
Other 21,172 15,159
Total accrued liabilities $ 141,261 $ 107,949