Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating Revenues
Regulated Energy		$ 151,800	$ 130,700	$ 351,400	$ 299,100
Unregulated Energy		47,900	41,400	154,600	124,500
Total Operating Revenues		192,800	166,300	491,500	412,000
Operating Expenses
Regulated natural gas and electric costs		34,100	27,400	105,600	77,300
Unregulated propane and natural gas costs		15,900	12,300	60,700	43,600
Operations		54,900	52,300	112,900	103,900
Transaction-related expenses		500	1,400	800	2,300
Maintenance		6,000	5,600	11,400	11,500
Depreciation and amortization		21,900	17,900	44,400	34,900
Other taxes		9,200	8,600	18,600	18,100
Total Operating Expenses		142,500	125,500	354,400	291,600
Total operating income		50,300	40,800	137,100	120,400
Other income, net		400	1,000	1,000	1,200
Interest charges		17,800	16,800	35,900	33,800
Income Before Income Taxes		32,900	25,000	102,200	87,800
Income taxes		9,000	6,800	27,400	23,400
Net Income		$ 23,900	$ 18,200	$ 74,800	$ 64,400
Weighted Average Common Shares Outstanding:
Basic (shares)	[1]	23,307,000	22,284,000	23,133,000	22,267,000
Diluted (shares)		23,402,000	22,335,000	23,223,000	22,320,000
Earnings Per Share of Common Stock:
Income (Loss) from Continuing Operations, Per Basic Share		$ 1.03	$ 0.82	$ 3.23	$ 2.89
Basic (in dollars per share)		1.03	0.82	3.23	2.89
Earnings Per Share, Diluted [Abstract]
Income (Loss) from Continuing Operations, Per Diluted Share		1.02	0.82	3.22	2.89
Diluted (in dollars per share)		$ 1.02	$ 0.82	$ 3.22	$ 2.89
Other Operating Revenue		$ (6,900)	$ (5,800)	$ (14,500)	$ (11,600)

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