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Concentrations
12 Months Ended
Dec. 31, 2019
Risks and Uncertainties [Abstract]  
Concentrations

Note 22 —Concentrations

During the years ended December 31, 2017, 2018, and 2019, two, two, and three suppliers, respectively, each accounted for 10% or more of the Company’s natural gas expense related to CNG and LNG purchases.

During the years ended December 31, 2017, 2018, and 2019, no single customer accounted for 10% or more of the Company’s total revenue.