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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Accrued Liabilities, Current [Abstract]    
Accrued salaries, wages and benefits $ 15,071 $ 7,323
Accrual for insurance claims liabilities 60,365 3,714
Sales taxes 5,909 3,021
Property taxes 908 389
Sale-leaseback arrangement 676 482
Accounting and audit fees 344 267
Interest 22 76
Equipment purchase 461 0
Other accrued expenses 881 1,694
Total accrued liabilities $ 84,637 $ 16,966