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Inventory
12 Months Ended
Dec. 31, 2019
Inventory, Net [Abstract]  
Inventory Inventory
Inventories consisted of $12.6 million and $5.5 million of refined petroleum products as of December 31, 2019 and 2018, respectively. Inventory is stated at the lower of cost or net realizable value, with cost determined on a FIFO basis. We recognize lower of cost or net realizable value charges as a component of cost of materials and other in the consolidated statements of income and comprehensive income, which amounted to $0.1 million and $0.2 million during the years ended December 31, 2019 and 2018, respectively.