Madison Gas and Electric Company Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other comprehensive income (loss), net of tax:
Unrealized (loss) gain on available for sale securities, net of tax	$ (101)	$ 81	$ 283
Comprehensive Income	71,242	80,400	75,188
MGE [Member]
Net Income	71,465	81,938	76,445
Other comprehensive income (loss), net of tax:
Unrealized (loss) gain on available for sale securities, net of tax	(121)	(48)	188
Comprehensive Income Including Noncontrolling Interest	71,344	81,890	76,633
Less: Comprehensive Income Attributable to Noncontrolling Interest, net of tax	(26,097)	(26,310)	(27,438)
Comprehensive Income	$ 45,247	$ 55,580	$ 49,195