Inventory	3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]
Inventory	InventoryInventories consisted of $5.1 million and $12.6 million of refined petroleum products as of March 31, 2020 and December 31, 2019, respectively. Inventory is stated at the lower of cost or net realizable value, with cost determined on a first-in, first-out 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 $2.9 million and a nominal amount during the three months ended March 31, 2020 and 2019, respectively.

The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

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