Madison Gas and Electric Company Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	$ 11	$ (85)	$ (143)	$ (180)
Comprehensive Income	27,891	28,269	60,915	59,931
MGE [Member]
Net Income	27,662	28,411	60,949	60,240
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	8	(28)	(31)	(137)
Total comprehensive income including noncontrolling interest	27,670	28,383	60,918	60,103
Less: Comprehensive income attributable to Noncontrolling Interest, net of tax	(5,695)	(6,633)	(17,899)	(19,812)
Comprehensive Income	$ 21,975	$ 21,750	$ 43,019	$ 40,291