Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Revenues:
Electric revenues	$ 116,167	$ 117,291
Gas revenue	75,169	99,962
Total Operating Revenues	191,336	217,253
Operating Expenses:
Fuel for electric generation	12,704	13,807
Purchased power	9,442	15,386
Cost of gas sold	41,877	67,847
Other operations and maintenance	53,974	49,958
Depreciation and amortization	26,600	24,611
Other general taxes	5,994	5,610
Total Operating Expenses	150,591	177,219
Operating Income	40,745	40,034
Other income, net	3,881	5,355
Interest expense, net	(8,004)	(7,487)
Income before income taxes	36,622	37,902
Income tax provision	(2,808)	(6,824)
Net Income Including Noncontrolling Interest	33,814	31,078
Net Income	$ 33,814	$ 31,078
Earnings per share of Common Stock - Basic	$ 0.93	$ 0.86
Earnings per share of Common Stock - Diluted	0.93	0.86
Dividends per share of common stock	$ 0.428	$ 0.408
Weighted Average Shares Outstanding - Basic	36,171	36,163
Weighted Average Shares Outstanding - Diluted	36,189	36,180
MGE [Member]
Operating Revenues:
Electric revenues	$ 116,167	$ 117,291
Gas revenue	75,169	99,962
Total Operating Revenues	191,336	217,253
Operating Expenses:
Fuel for electric generation	12,704	13,807
Purchased power	9,442	15,386
Cost of gas sold	41,877	67,847
Other operations and maintenance	53,560	49,569
Depreciation and amortization	26,600	24,611
Other general taxes	5,994	5,610
Total Operating Expenses	150,177	176,830
Operating Income	41,159	40,423
Other income, net	1,108	2,907
Interest expense, net	(8,076)	(7,520)
Income before income taxes	34,191	35,810
Income tax provision	(1,991)	(6,167)
Net Income Including Noncontrolling Interest	32,200	29,643
Less Net Income Attributable to Noncontrolling Interest, net of tax	(5,597)	(5,520)
Net Income	$ 26,603	$ 24,123