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Assets Held for Sale and Discontinued Operations | 6 Months Ended
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Jun. 30, 2022
Discontinued Operations and Disposal Groups [Abstract] |
Assets Held for Sale and Discontinued Operations | Note E – Assets Held for Sale and Discontinued Operations The Company has accounted for its former U.K. and U.S. refining and marketing and Malaysian exploration and production operations as discontinued operations for all periods presented. The results of operations associated with discontinued operations for the three-month and six-month periods ended June 30, 2022 and 2021 were as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(Thousands of dollars) | 2022 |  | 2021 |  | 2022 |  | 2021
Revenues | $ | — |  |  | 246 |  |  | $ | 10 |  |  | 658 |
Costs and expenses |  |  |  |  |  |  |
Other costs and expenses (benefits) | 943 |  |  | 348 |  |  | 1,504 |  |  | 552 |
(Loss) income before taxes | (943) |  |  | (102) |  |  | (1,494) |  |  | 106 |
Income tax expense | — |  |  | — |  |  | — |  |  | — |
(Loss) income from discontinued operations | $ | (943) |  |  | (102) |  |  | $ | (1,494) |  |  | 106 |
As of June 30, 2022 and December 31, 2021, assets held for sale on the Consolidated Balance Sheet include the carrying value of the net property, plant and equipment of the CA-2 project in Brunei and the Company’s former headquarters office building in El Dorado, Arkansas.
(Thousands of dollars) | June 30, 2022 |  | December 31, 2021
Current assets |  |  |
Property, plant, and equipment, net | 15,561 |  |  | 15,453 |
Total current assets associated with assets held for sale | $ | 15,561 |  |  | 15,453 |

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- Definition The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://asc.fasb.org/topic&trid=2155823 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -URI https://asc.fasb.org/subtopic&trid=2122178 + Details
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