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Capitalization (Tables) | 3 Months Ended
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Mar. 31, 2023
Capitalization [Abstract] |
Schedule of carrying amount and fair value of the bonds |
|  | (Thousands of Dollars)
|  | March 31, 2023 |  | December 31, 2022
|  | Carrying |  | Fair |  | Carrying |  | Fair
|  | Amount |  | Value |  | Amount |  | Value
FMBs |  | $ | 146,496 |  |  | $ | 137,983 |  |  | $ | 147,269 |  |  | $ | 138,756 |

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- Definition Tabular disclosure of maturity and sinking fund requirement for long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 470 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481544/470-10-50-1 + Details
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