Madison Gas and Electric Company Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	$ 0	$ 97
Comprehensive Income	20,001	19,397
MGE [Member]
Net Income	18,256	18,183
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	0	(6)
Total comprehensive income including noncontrolling interest	18,256	18,177
Less: Comprehensive income attributable to Noncontrolling Interest, net of tax	(5,806)	(5,389)
Comprehensive Income	$ 12,450	$ 12,788