Madison Gas and Electric Company Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available for sale securities, net of tax	$ 283	[1]	$ (18)	[2]	$ (15)	[3]
Reclassification of realized gain on available-for-sale securities, net of tax	0	[4]	0	[4]	(15)	[3]
Comprehensive Income	75,188		64,428		60,898
MGE [Member]
Net Income	76,445		65,306		61,252
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available for sale securities, net of tax	188	[5]	(43)	[6]	(9)	[7]
Reclassification of realized gain on available-for-sale securities, net of tax	0	[4]	0	[4]	(15)	[3]
Comprehensive Income Including Noncontrolling Interest	76,633		65,263		61,228
Less: Comprehensive Income Attributable to Noncontrolling Interest, net of tax	(27,438)		(24,489)		(23,970)
Comprehensive Income	$ 49,195		$ 40,774		$ 37,258

[1] Net of $189 tax

[2] Net of $12 tax

[3] Net of $10 tax

[4] Net of $0 tax

[5] Net of $126 tax

[6] Net of $29 tax

[7] Net of $7 tax