Madison Gas and Electric Company Consolidated Statements of Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Revenues:
Electric revenues		$ 410,202	$ 420,291	$ 398,132
Gas revenues		134,543	143,737	221,720
Total Operating Revenues		544,745	564,028	619,852
Operating Expenses:
Fuel for electric generation		60,736	53,858	42,828
Purchased power		56,313	81,224	73,232
Cost of gas sold		66,771	76,109	143,644
Other operations and maintenance		167,989	164,478	161,703
Depreciation and amortization		44,646	44,225	40,695
Other general taxes		20,062	19,879	19,652
Total Operating Expenses		416,517	439,773	481,754
Operating Income (Loss)		128,228	124,255	138,098
Other Income and Deductions:
Equity earnings in MGE Transco		8,428	7,728	9,150
Total Other Income and Deductions		9,711	8,613	10,079
Interest Expense:
Net Interest Expense		19,866	20,162	19,673
Net Income		75,560	71,343	80,319
MGE [Member]
Operating Revenues:
Electric revenues		410,226	420,313	398,154
Gas revenues		134,572	143,752	221,741
Total Operating Revenues		544,798	564,065	619,895
Operating Expenses:
Fuel for electric generation		60,745	53,866	42,836
Purchased power		56,327	81,237	73,245
Cost of gas sold		66,800	76,124	143,665
Other operations and maintenance		167,077	163,622	160,831
Depreciation and amortization		44,622	44,178	40,648
Other general taxes		20,062	19,879	19,652
Income tax provision		39,616	38,159	45,090
Total Operating Expenses		455,249	477,065	525,967
Operating Income (Loss)	[1]	89,549	87,000	93,928
Other Income and Deductions:
AFUDC - equity funds		1,207	712	3,466
Equity earnings in MGE Transco		6,366	7,728	9,150
Income tax provision		(2,175)	(3,247)	(4,055)
Other deductions, net		(217)	(345)	(704)
Total Other Income and Deductions	[1]	5,181	4,848	7,857
Income before interest expense		94,730	91,848	101,785
Interest Expense:
Interest on long-term debt		20,351	20,520	20,927
Other interest, net		182	94	62
AFUDC - borrowed funds		(395)	(231)	(1,142)
Net Interest Expense		20,138	20,383	19,847
Net Income Including Noncontrolling Interest		74,592	71,465	81,938
Less Net Income Attributable to Noncontrolling Interest, net of tax		(23,358)	(26,097)	(26,310)
Net Income		$ 51,234	$ 45,368	$ 55,628

[1] Amounts are shown net of the related tax expense, consistent with the presentation on the MGE Consolidated Statements of Income.