Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Revenues:
Electric revenues	$ 93,028	$ 97,469
Gas revenue	56,845	70,100
Total Operating Revenues	149,873	167,569
Operating Expenses:
Fuel for electric generation	9,706	13,917
Purchased power	10,486	10,851
Cost of gas sold	30,798	43,253
Other operations and maintenance	44,369	46,934
Depreciation and amortization	18,167	17,139
Other general taxes	4,907	4,963
Total Operating Expenses	118,433	137,057
Operating Income	31,440	30,512
Other income, net	5,671	4,851
Interest expense, net	(6,061)	(5,647)
Income before income taxes	31,050	29,716
Income tax provision	(5,013)	(5,709)
Net Income Including Noncontrolling Interest	26,037	24,007
Net Income	$ 26,037	$ 24,007
Earnings Per Share of Common Stock (basic and diluted)	$ 0.75	$ 0.69
Dividends per share of common stock	$ 0.353	$ 0.338
Weighted Average Shares Outstanding (basic and diluted)	34,668	34,668
MGE [Member]
Operating Revenues:
Electric revenues	$ 93,028	$ 97,469
Gas revenue	56,845	70,100
Total Operating Revenues	149,873	167,569
Operating Expenses:
Fuel for electric generation	9,706	13,917
Purchased power	10,486	10,851
Cost of gas sold	30,798	43,253
Other operations and maintenance	44,150	46,662
Depreciation and amortization	18,167	17,139
Other general taxes	4,907	4,963
Total Operating Expenses	118,214	136,785
Operating Income	31,659	30,784
Other income, net	3,380	2,207
Interest expense, net	(6,111)	(5,995)
Income before income taxes	28,928	26,996
Income tax provision	(4,371)	(4,926)
Net Income Including Noncontrolling Interest	24,557	22,070
Less Net Income Attributable to Noncontrolling Interest, net of tax	(5,493)	(5,490)
Net Income	$ 19,064	$ 16,580