Madison Gas and Electric Company Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	$ 32	$ 10	$ 129	$ (154)
Comprehensive Income	15,575	16,160	34,972	33,024
MGE [Member]
Net Income	14,150	16,090	32,333	33,287
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	(25)	(9)	(31)	(39)
Total comprehensive income including noncontrolling interest	14,125	16,081	32,302	33,248
Less: Comprehensive income attributable to Noncontrolling Interest, net of tax	(5,396)	(5,952)	(10,785)	(12,204)
Comprehensive Income	$ 8,729	$ 10,129	$ 21,517	$ 21,044