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Regulatory Matters: Winter Storm Uri (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | $ 652,981 | $ 796,599
Storm Carrying Costs | 22,000 | 4,100
Winter Storm Uri |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | 546,000 |
Amount Recovered Through Regulatory Mechanism | 174,000 | 40,000
Storm Carrying Costs One Time True-up to Commission Authorized Rates | 10,000 |
Storm Costs |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | $ 347,980 | 509,025
Storm Costs | Winter Storm Uri |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets |  | $ 546,000
Regulatory Asset, Amortization Period | 2 years 7 months 6 days | 3 years 6 months
Deferred gas cost adjustments |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | $ 12,147 | $ 9,488

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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 -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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