Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities (Details)

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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Accrued Liabilities    
Salaries, wages, and commissions $ 39,131 $ 34,584
Insurance liabilities 22,414 22,007
Income taxes payable 13,124 129
Employee tax-related liabilities 12,666 12,603
Deferred revenue 8,091 6,542
Sales & property taxes 7,451 6,939
Customer rebates 4,720 6,191
Interest payable on long-term debt 155 3,924
Other 17,194 15,030
Total accrued liabilities $ 124,946 $ 107,949