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Regulatory Matters - Schedule of Decoupling and Earnings Sharing Mechanisms (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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WASHINGTON | Decoupling Rebate [Member] |  |
Schedule of Decoupling and Earnings Sharing [Line Items] |  |
Regulatory Liabilities | $ (3,232) | $ (13,210)
IDAHO | Decoupling Rebate [Member] |  |
Schedule of Decoupling and Earnings Sharing [Line Items] |  |
Regulatory Liabilities | (7,961) | (7,889)
IDAHO | Revenue Subject to Refund [Member] |  |
Schedule of Decoupling and Earnings Sharing [Line Items] |  |
Regulatory Liabilities | (572) | (686)
OREGON | Decoupling Surcharge [Member] |  |
Schedule of Decoupling and Earnings Sharing [Line Items] |  |
Regulatory assets |  | $ 2,853
OREGON | Decoupling Rebate [Member] |  |
Schedule of Decoupling and Earnings Sharing [Line Items] |  |
Regulatory Liabilities | $ (3,724) |

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- Definition The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481878/980-340-50-1 + Details
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