REGULATORY ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	$ 70,619		$ 70,619		$ 101,210
Regulatory assets, noncurrent	260,583		260,583		278,006
Regulatory Assets	331,202		331,202		379,216
Regulatory Liability, Current	(61,208)		(61,208)		(22,525)
Regulatory Liability, Noncurrent	(461,739)		(461,739)		(467,563)
Regulatory Liabilities	(522,947)		(522,947)		(490,088)
Net Regulatory Assets (Liabilities), Current	9,411		9,411		78,685
Net regulatory assets and liabilities, noncurrent	(201,156)		(201,156)		(189,557)
Net Regulatory Assets (Liabilities)	(191,745)		(191,745)		(110,872)
Amortization of Rate Deferral	800	$ 1,800	8,200	$ 11,300
Income tax rate changes [Member] [Domain]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Current	0		0		0
Regulatory Liability, Noncurrent	(452,274)		(452,274)		(467,563)
Regulatory Liabilities	(452,274)		(452,274)		(467,563)
Over-recovered purchased-gas costs [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Current	(61,208)		(61,208)		(22,525)
Regulatory Liability, Noncurrent	0		0		0
Regulatory Liabilities	(61,208)		(61,208)		(22,525)
Other Current Liabilities
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Current	0		0
Other Noncurrent Liabilities
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liability, Noncurrent	(9,465)		(9,465)
Other Liabilities
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory Liabilities	(9,465)		(9,465)
Winter weather event costs
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	0		0		9,051
Regulatory assets, noncurrent	980		980		15,938
Regulatory Assets	980		980		24,989
Under-recovered purchased-gas costs [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	37,741		37,741		43,819
Regulatory assets, noncurrent	0		0		0
Regulatory Assets	37,741		37,741		43,819
Pension and postretirement benefit costs, net [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	1,357		1,357		1,358
Regulatory assets, noncurrent	224,716		224,716		224,837
Regulatory Assets	226,073		226,073		226,195
Reacquired debt costs [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	723		723		723
Regulatory assets, noncurrent	1,446		1,446		1,989
Regulatory Assets	2,169		2,169		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	29,317		29,317		30,067
Regulatory Assets	30,317		30,317		31,067
Ad valorem tax [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	3,059		3,059		14,066
Regulatory assets, noncurrent	0		0		0
Regulatory Assets	3,059		3,059		14,066
Weather normalization [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	13,696		13,696		26,684
Regulatory assets, noncurrent	0		0		0
Regulatory Assets	13,696		13,696		26,684
Customer credit deferrals
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	7,074		7,074		255
Regulatory assets, noncurrent	1,100		1,100		3,639
Regulatory Assets	8,174		8,174		3,894
Other regulatory assets, net [Member]
SCHEDULE OF REGULATED ASSETS AND LIABILITIES [Line Items]
Regulatory assets, current	5,969		5,969		4,254
Regulatory assets, noncurrent	3,024		3,024		1,536
Regulatory Assets	$ 8,993		$ 8,993		$ 5,790