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Regulatory Assets and Liabilities - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Schedule of Regulatory Assets and Liabilities [Line Items] |  |  |
Short-term portion of the regulatory assets | $ 50,335 |  | $ 66,826
Short-term portion of the regulatory liabilities | $ 17,272 |  | $ 12,240
Return on equity | 9.20% |  |
Approved debt | 5.51% |  |
Approved equity | 53.40% |  |
Approved equity to debt ratio | 46.60% |  |
Proposed return on equity | 10.35% |  |
Requested debt | 4.23% |  |
Requested equity | 53.40% |  |
Requested equity to debt ratio | 46.60% |  |
Decrease on annual revenue | $ 11,000 | $ 11,000 |
California Public Advocates Office |  |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |  |
Recommended return on equity | 7.81% |  |
Recommended debt | 4.23% |  |
Recommended equity | 49.40% |  |
Recommended equity to debt ratio | 50.60% |  |

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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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