Annual report pursuant to Section 13 and 15(d)

Other Current Liabilities - Components of Other Current Liabilities (Details)

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Other Current Liabilities - Components of Other Current Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Other Liabilities Disclosure [Abstract]    
Accrued employee costs $ 30,935 $ 28,404
Fuel and other taxes 31,381 29,817
Accrued insurance liabilities 10,986 8,139
Accrued expenses 35,672 36,485
Environmental liabilities 3,459 3,714
Deferred vendor income 11,654 11,328
Accrued income taxes payable 0 3,521
Due to related parties 258 144
Liabilities resulting from Additional and Contingent Consideration 8,813 9,569
Other accrued liabilities 4,330 2,516
Total other current liabilities $ 137,488 $ 133,637