REGULATORY ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	$ 49,504	$ 101,210
Regulatory assets, noncurrent	256,225	278,006
Regulatory Assets	305,729	379,216
Regulatory Liability, Current	(57,277)	(22,525)
Regulatory Liability, Noncurrent	(451,620)	(467,563)
Regulatory Liabilities	(508,897)	(490,088)
Net Regulatory Assets (Liabilities), Current	(7,773)	78,685
Net regulatory assets and liabilities, noncurrent	(195,395)	(189,557)
Net Regulatory Assets (Liabilities)	(203,168)	(110,872)
Amortization of Rate Deferral	10,400	14,400	$ 14,700
Income tax rate changes [Member] [Domain]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Current	0	0
Regulatory Liability, Noncurrent	(444,986)	(467,563)
Regulatory Liabilities	(444,986)	(467,563)
Over-recovered purchased-gas costs [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Current	(56,876)	(22,525)
Regulatory Liability, Noncurrent	0	0
Regulatory Liabilities	(56,876)	(22,525)
Ad valorem tax [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Current	(165)
Regulatory Liability, Noncurrent	0
Regulatory Liabilities	(165)
Other regulatory liabilities
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Current	236
Regulatory Liability, Noncurrent	(6,634)
Regulatory Liabilities	(6,870)
Winter weather event costs
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current		9,051
Regulatory assets, noncurrent		15,938
Regulatory Assets		24,989
Under-recovered purchased-gas costs [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	10,692	43,819
Regulatory assets, noncurrent	0	0
Regulatory Assets	10,692	43,819
Pension and postretirement benefit costs, net [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	10,929	1,358
Regulatory assets, noncurrent	221,809	224,837
Regulatory Assets	232,738	226,195
Reacquired debt costs [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	723	723
Regulatory assets, noncurrent	1,266	1,989
Regulatory Assets	1,989	2,712
MGP Costs [Member] [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	1,000	1,000
Regulatory assets, noncurrent	29,105	30,067
Regulatory Assets	30,105	31,067
Ad valorem tax [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current		14,066
Regulatory assets, noncurrent		0
Regulatory Assets		14,066
Weather normalization [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	19,175	26,684
Regulatory assets, noncurrent	0	0
Regulatory Assets	19,175	26,684
Customer credit deferrals
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	2,953	255
Regulatory assets, noncurrent	1,091	3,639
Regulatory Assets	4,044	3,894
Other regulatory assets, net [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	4,032	4,254
Regulatory assets, noncurrent	2,954	1,536
Regulatory Assets	$ 6,986	$ 5,790