Madison Gas and Electric Company Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Other comprehensive income/(loss), net of tax:
Unrealized (loss) gain on available-for-sale securities, net of tax	$ (85)	$ 95	$ (180)	$ 56
Comprehensive Income	28,269	23,424	59,931	65,189
MGE [Member]
Net Income	28,411	23,469	60,240	65,255
Other comprehensive income/(loss), net of tax:
Unrealized (loss) gain on available-for-sale securities, net of tax	(28)	43	(137)	(54)
Total comprehensive income including noncontrolling interest	28,383	23,512	60,103	65,201
Less: Comprehensive income attributable to Noncontrolling Interest, net of tax	(6,633)	(6,653)	(19,812)	(19,784)
Comprehensive Income	$ 21,750	$ 16,859	$ 40,291	$ 45,417