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Derivative Instruments (Tables) | 9 Months Ended
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Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Derivative Instruments | The following table presents changes in the fair value of the Level 3 derivatives for the three and nine months ended September 30, 2023 and 2022. The change in fair value was due to the change in market energy prices during the three and nine months ended September 30, 2023 and 2022.
|  | For The Three Months Ended September 30, |  | For The Nine Months Ended September 30,
(dollars in thousands) |  | 2023 |  | 2022 |  | 2023 |  | 2022
Fair value at beginning of the period |  | $ | 4,657 |  |  | $ | 8,114 |  |  | $ | 11,847 |  |  | $ | 4,441 |
Unrealized (losses) gains on purchase power contracts |  | (3,132) |  |  | (545) |  |  | (10,322) |  |  | 3,128 |
Fair value at end of the period |  | $ | 1,525 |  |  | $ | 7,569 |  |  | $ | 1,525 |  |  | $ | 7,569 |

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- Definition Tabular disclosure of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) using recurring unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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