Inventory	12 Months Ended
Dec. 31, 2021
Inventory, Net [Abstract]
Inventory	InventoryInventories consisted of $2.4 million and $3.1 million of refined petroleum products as of December 31, 2021 and 2020, respectively, each of which are net of lower of cost or net realizable value reserve of a nominal amount. 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.

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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