Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 167,081	$ 130,109
Finite-Lived Intangible Assets, Accumulated Amortization	(87,750)	(85,113)
Intangible assets, net	79,331	44,996
Wholesale Fuel Supply Contracts/Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	161,451	124,479
Finite-Lived Intangible Assets, Accumulated Amortization	(82,391)	(79,791)
Intangible assets, net	79,060	44,688
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,078	1,078
Finite-Lived Intangible Assets, Accumulated Amortization	(1,078)	(1,072)
Intangible assets, net		6
Covenant Not to Compete [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	4,552	4,552
Finite-Lived Intangible Assets, Accumulated Amortization	(4,281)	(4,250)
Intangible assets, net	$ 271	$ 302