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REGULATORY ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory assets, current | $ 83,367 |  | $ 83,367 |  | $ 49,504
Regulatory assets, noncurrent | 250,704 |  | 250,704 |  | 256,225
Regulatory Assets | 334,071 |  | 334,071 |  | 305,729
Regulatory Liability, Current | (24,702) |  | (24,702) |  | (57,277)
Regulatory Liability, Noncurrent | (433,135) |  | (433,135) |  | (451,620)
Regulatory Liabilities | (457,837) |  | (457,837) |  | (508,897)
Net Regulatory Assets (Liabilities), Current | 58,665 |  | 58,665 |  | (7,773)
Net regulatory assets and liabilities, noncurrent | (182,431) |  | (182,431) |  | (195,395)
Net Regulatory Assets (Liabilities) | (123,766) |  | (123,766) |  | (203,168)
Amortization of Rate Deferral | (900) | $ 1,400 | (900) | $ 7,400 |
Income tax rate changes [Member] [Domain] |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory Liability, Current | 0 |  | 0 |  | 0
Regulatory Liability, Noncurrent | (428,331) |  | (428,331) |  | (444,986)
Regulatory Liabilities | (428,331) |  | (428,331) |  | (444,986)
Over-recovered purchased-gas costs [Member] |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory Liability, Current | (22,384) |  | (22,384) |  | (56,876)
Regulatory Liability, Noncurrent | 0 |  | 0 |  | 0
Regulatory Liabilities | (22,384) |  | (22,384) |  | (56,876)
Ad valorem tax [Member] |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory Liability, Current | (2,060) |  | (2,060) |  | (165)
Regulatory Liability, Noncurrent | 0 |  | 0 |  | 0
Regulatory Liabilities | (2,060) |  | (2,060) |  | (165)
Other regulatory liabilities |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory Liability, Current | (258) |  | (258) |  | (236)
Regulatory Liability, Noncurrent | (4,804) |  | (4,804) |  | (6,634)
Regulatory Liabilities | (5,062) |  | (5,062) |  | (6,870)
Under-recovered purchased-gas costs [Member] |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory assets, current | 19,830 |  | 19,830 |  | 10,692
Regulatory assets, noncurrent | 0 |  | 0 |  | 0
Regulatory Assets | 19,830 |  | 19,830 |  | 10,692
Pension and postretirement benefit costs, net [Member] |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory assets, current | 10,187 |  | 10,187 |  | 10,929
Regulatory assets, noncurrent | 216,408 |  | 216,408 |  | 221,809
Regulatory Assets | 226,595 |  | 226,595 |  | 232,738
Reacquired debt costs [Member] |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory assets, current | 723 |  | 723 |  | 723
Regulatory assets, noncurrent | 904 |  | 904 |  | 1,266
Regulatory Assets | 1,627 |  | 1,627 |  | 1,989
MGP Costs [Member] [Member] |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory assets, current | 1,000 |  | 1,000 |  | 1,000
Regulatory assets, noncurrent | 29,342 |  | 29,342 |  | 29,105
Regulatory Assets | 30,342 |  | 30,342 |  | 30,105
Weather normalization [Member] |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory assets, current | 32,835 |  | 32,835 |  | 19,175
Regulatory assets, noncurrent | 0 |  | 0 |  | 0
Regulatory Assets | 32,835 |  | 32,835 |  | 19,175
Customer credit deferrals |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory assets, current | 12,385 |  | 12,385 |  | 2,953
Regulatory assets, noncurrent | 1,075 |  | 1,075 |  | 1,091
Regulatory Assets | 13,460 |  | 13,460 |  | 4,044
Other regulatory assets, net [Member] |  |  |  |  |
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items] |  |  |  |  |
Regulatory assets, current | 6,407 |  | 6,407 |  | 4,032
Regulatory assets, noncurrent | 2,975 |  | 2,975 |  | 2,954
Regulatory Assets | $ 9,382 |  | $ 9,382 |  | $ 6,986

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- Definition [Line Items] for Tabular disclosure of assets and liabilities that result from rate actions of a regulator. Regulatory assets are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability. + References No definition available. + Details
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- Definition The periodic expense to reduce the value of the rate deferral asset that is created when utilities under bill customers during periods of rate increases by deferring rate increases. These customers eventually pay higher rates to repay the utility for the rate deferral. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
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- Definition The net amount of all regulatory assets less all regulatory liabilities 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/1943274/2147478742/980-340-50-1 + Details
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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 -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478742/980-340-50-1 + Details
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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. + 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/1943274/2147478742/980-340-50-1 + Details
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