Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 225,661	$ 194,093
Finite-Lived Intangible Assets, Accumulated Amortization	(105,353)	(101,181)
Intangible assets, net	120,308	92,912
Wholesale Fuel Supply Contracts/Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	223,003	187,643
Finite-Lived Intangible Assets, Accumulated Amortization	(103,852)	(95,694)
Intangible assets, net	119,151	91,949
Trademarks/Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2,208	1,898
Finite-Lived Intangible Assets, Accumulated Amortization	(1,156)	(1,115)
Intangible assets, net	1,052	783
Covenant Not to Compete [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	450	4,552
Finite-Lived Intangible Assets, Accumulated Amortization	(345)	(4,372)
Intangible assets, net	$ 105	$ 180