Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2012

Long-Term Debt Tables [Abstract]

Long-Term Debt

		2012				2011
(In thousands)		MGE Energy		MGE		MGE Energy		MGE
First Mortgage Bonds (a):
7.70%, 2028 Series	$	1,200	$	1,200	$	1,200	$	1,200
Tax Exempt Debt:
3.45% and 4.875%, respectively, 2027 Series,
Industrial Development Revenue Bonds (b)		19,300		19,300		19,300		19,300
5.875% 2034 Series, Industrial Development
Revenue Bonds (c)		0		0		28,000		28,000
Total Tax Exempt Debt		19,300		19,300		47,300		47,300
Medium-Term Notes (d):
5.26%, due 2017		20,000		20,000		20,000		20,000
5.25%, due 2017		30,000		30,000		30,000		30,000
7.12%, due 2032		25,000		25,000		25,000		25,000
6.12%, due 2028		20,000		20,000		20,000		20,000
6.247%, due 2037		25,000		25,000		25,000		25,000
Total Medium-Term Notes		120,000		120,000		120,000		120,000
Other Long-Term Debt:
5.59%, due 2018 (e)		40,000		40,000		40,000		40,000
5.68%, due 2033 (f)		30,000		30,000		30,000		30,000
5.19%, due 2033 (f)		20,000		20,000		20,000		20,000
5.04%, due 2040 (g)		45,138		45,138		46,806		46,806
3.38%, due 2020 (e)		15,000		15,000		15,000		15,000
5.26%, due 2040 (e)		15,000		15,000		15,000		15,000
4.74%, due 2041 (g)		28,167		28,167		29,167		29,167
4.38%, due 2042 (c)		28,000		28,000		0		0
Total Other Long-Term Debt		221,305		221,305		195,973		195,973
Long-term debt due within one year		(3,013)		(3,013)		(2,667)		(2,667)
Unamortized discount		(301)		(301)		(903)		(903)
Total Long-Term Debt	$	358,491	$	358,491	$	360,903	$	360,903

Long-Term Debt Maturities

		MGE
(In thousands)		Energy		MGE *
2013	$	3,013	$	3,013
2014		4,102		4,102
2015		4,182		4,182
2016		4,267		4,267
2017		54,357		54,357
Future years		291,884		291,884
Total	$	361,805	$	361,805