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Inventories | 12 Months Ended
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Dec. 31, 2022
Inventory Disclosure [Abstract] |
Inventories | Note F – Inventories Inventories consisted of the following at December 31, 2022 and 2021:
| December 31,
(Thousands of dollars) | 2022 |  | 2021
Unsold crude oil | $ | 6,546 |  |  | $ | 15,497 |
Materials and supplies | 47,967 |  |  | 38,701 |
Inventories | $ | 54,513 |  |  | $ | 54,198 |

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