UTILITY PLANT AND JOINTLY-OWNED FACILITIES (Narrative) (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Sep. 30, 2023 |
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| Public Utility, Property, Plant and Equipment [Line Items] | ||||
| Regulatory liability, noncurrent | $ 396,061 | $ 377,546 | ||
| Computer software, accumulated amortization | 100,000 | 110,000 | ||
| Amortization of computer software costs | 27,000 | 30,000 | $ 33,000 | |
| Plant acquisition adjustments | (206,000) | (206,000) | ||
| Intangible Plant, Software Costs and Other | ||||
| Public Utility, Property, Plant and Equipment [Line Items] | ||||
| Plant acquisition adjustments | (4,000) | $ (4,000) | ||
| Future estimated amortization costs for intangible assets | ||||
| 2024 | 24,000 | |||
| 2025 | 19,000 | |||
| 2026 | 16,000 | |||
| 2027 | 11,000 | |||
| 2028 | $ 7,000 | |||
| Regulatory Assets, Depreciation Rate | ||||
| Public Utility, Property, Plant and Equipment [Line Items] | ||||
| Adjustment to accumulated depreciation | $ 115,000 | |||
| Regulatory liability, noncurrent | $ 115,000 | |||
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- Definition For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of expense for amortization of capitalized computer software costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Period end book value of accumulated depreciation on property, plant and equipment (PPE) that is owned by the regulated operations of the public utility. No definition available.
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- Definition Amount of acquisition adjustments included in property, plant and equipment (PPE) for utilities. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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