REGULATORY ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	$ 56,017		$ 56,017		$ 101,210
Regulatory assets, noncurrent	254,070		254,070		278,006
Regulatory Assets	310,087		310,087		379,216
Regulatory Liability, Current	(66,959)		(66,959)		(22,525)
Regulatory Liability, Noncurrent	(454,458)		(454,458)		(467,563)
Regulatory Liabilities	(521,417)		(521,417)		(490,088)
Net Regulatory Assets (Liabilities), Current	(10,942)		(10,942)		78,685
Net Regulatory Assets (Liabilities), Noncurrent	(200,388)		(200,388)		(189,557)
Net Regulatory Assets (Liabilities)	(211,330)		(211,330)		(110,872)
Amortization of Rate Deferral	1,400	$ 2,400	7,400	$ 9,500
Income tax rate changes [Member] [Domain]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Current	0		0		0
Regulatory Liability, Noncurrent	(454,458)		(454,458)		(467,563)
Regulatory Liabilities	(454,458)		(454,458)		(467,563)
Over-recovered purchased-gas costs [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Current	(66,959)		(66,959)		(22,525)
Regulatory Liability, Noncurrent	0		0		0
Regulatory Liabilities	(66,959)		(66,959)		(22,525)
Winter weather event costs
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	0		0		9,051
Regulatory assets, noncurrent	979		979		15,938
Regulatory Assets	979		979		24,989
Under-recovered purchased-gas costs [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	19,286		19,286		43,819
Regulatory assets, noncurrent	0		0		0
Regulatory Assets	19,286		19,286		43,819
Pension and postretirement benefit costs, net [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	1,358		1,358		1,358
Regulatory assets, noncurrent	224,820		224,820		224,837
Regulatory Assets	226,178		226,178		226,195
Reacquired debt costs [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	723		723		723
Regulatory assets, noncurrent	1,627		1,627		1,989
Regulatory Assets	2,350		2,350		2,712
MGP Costs [Member] [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	1,000		1,000		1,000
Regulatory assets, noncurrent	29,567		29,567		30,067
Regulatory Assets	30,567		30,567		31,067
Ad valorem tax [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	4,705		4,705		14,066
Regulatory assets, noncurrent	0		0		0
Regulatory Assets	4,705		4,705		14,066
Weather normalization [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	14,098		14,098		26,684
Regulatory assets, noncurrent	0		0		0
Regulatory Assets	14,098		14,098		26,684
Customer credit deferrals
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	8,374		8,374		255
Regulatory assets, noncurrent	1,138		1,138		3,639
Regulatory Assets	9,512		9,512		3,894
Other regulatory assets, net [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	6,473		6,473		4,254
Regulatory assets, noncurrent	(4,061)		(4,061)		1,536
Regulatory Assets	$ 2,412		$ 2,412		$ 5,790

The net amount of all current regulatory assets less all current regulatory liabilities as of the end of the period.

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The net amount of noncurrent regulatory assets less all noncurrent regulatory liabilities as of the end of the period.

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No definition available.

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[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.

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No definition available.

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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
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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

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The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

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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.

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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.

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The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 405
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477571/980-405-25-1

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The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.

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The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(24))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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