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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Accrued Liabilities, Current [Abstract]    
Accrued salaries, wages and benefits $ 7,323 $ 6,492
Accrual for insurance liabilities 3,714 5,680
Sales taxes 3,021 2,178
Property taxes 389 924
Sale-leaseback arrangement 482 0
Accounting and audit fees 267 0
Interest 76 0
Capital lease liability 0 3,045
Other accrued expenses 1,694 521
Total accrued liabilities $ 16,966 $ 18,840