Madison Gas and Electric Company Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Other comprehensive income/(loss), net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	$ 7	$ 65
Comprehensive Income	27,724	22,649
MGE [Member]
Net Income	27,643	22,560
Other comprehensive income/(loss), net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	18	27
Total comprehensive income including noncontrolling interest	27,661	22,587
Less: Comprehensive income attributable to Noncontrolling Interest, net of tax	(6,510)	(6,826)
Comprehensive Income	$ 21,151	$ 15,761