Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Operating Revenues
Regulated Energy		$ 146,400	$ 130,600	$ 497,800	$ 429,700
Unregulated Energy		40,700	35,600	195,300	160,100
Total Operating Revenues		179,600	160,200	671,100	572,200
Operating Expenses
Regulated natural gas and electric costs		31,700	28,400	137,300	105,700
Unregulated propane and natural gas costs		10,700	9,800	71,400	53,400
Operations		53,600	49,500	166,500	153,400
Transaction-related expenses		200	800	1,000	3,100
Maintenance		6,100	5,100	17,500	16,600
Depreciation and amortization		23,300	16,800	67,700	51,700
Other taxes		9,000	8,900	27,600	27,000
Total Operating Expenses		134,600	119,300	489,000	410,900
Total operating income		45,000	40,900	182,100	161,300
Other income, net		200	500	1,200	1,700
Interest charges		18,200	17,100	54,100	50,900
Income Before Income Taxes		27,000	24,300	129,200	112,100
Income taxes		7,600	6,800	35,000	30,200
Net Income		$ 19,400	$ 17,500	$ 94,200	$ 81,900
Weighted Average Common Shares Outstanding:
Basic (shares)	[1]	23,526,000	22,501,000	23,265,000	22,346,000
Diluted (shares)		23,629,000	22,564,000	23,360,000	22,402,000
Earnings Per Share of Common Stock:
Income (Loss) from Continuing Operations, Per Basic Share		$ 0.82	$ 0.78	$ 4.05
Basic (in dollars per share)		0.82	0.78	4.05	$ 3.67
Earnings Per Share, Diluted [Abstract]
Income (Loss) from Continuing Operations, Per Diluted Share		0.82	0.78	4.03	3.66
Diluted (in dollars per share)		$ 0.82	$ 0.78	$ 4.03	$ 3.66
Other Operating Revenue		$ (7,500)	$ (6,000)	$ (22,000)	$ (17,600)

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