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Segment Information
9 Months Ended
Sep. 30, 2011
Segment Information Disclosure [Abstract] 
Segment Information

15.       Segment Information - MGE Energy and MGE.

 

MGE Energy operates in the following business segments: electric utility, gas utility, nonregulated energy, transmission investment, and all other. See MGE Energy's and MGE's 2010 Annual Report on Form 10-K for additional discussion of each of these segments.

The following tables show segment information for MGE Energy's operations for the indicated periods:

(In thousands)     Non-     Consolidation/  
MGE Energy     Regulated Transmission All Elimination Consolidated
  Electric Gas Energy Investment Others Entries Total
Three Months Ended September 30, 2011            
Operating revenues$114,963$17,249$1,360$0$0$0$133,572
Interdepartmental revenues 163 5,083 9,582 0 0 (14,828) 0
Total operating revenues 115,126 22,332 10,942 0 0 (14,828) 133,572
Depreciation and amortization (7,144) (1,377) (1,775) 0 0 0 (10,296)
Other operating expenses (78,118) (23,422) (44) 0 (186) 14,828 (86,942)
Operating income (loss) 29,864 (2,467) 9,123 0 (186) 0 36,334
Other income, net 35 12 0 2,167 127 0 2,341
Interest (expense) income, net (2,747) (775) (1,660) 0 40 0 (5,142)
Income (loss) before taxes 27,152 (3,230) 7,463 2,167 (19) 0 33,533
Income tax (provision) benefit (9,944) 1,350 (2,994) (870) (37) 0 (12,495)
Net income (loss)$17,208$(1,880)$4,469$1,297$(56)$0$21,038
               
Three Months Ended September 30, 2010            
Operating revenues$109,849$17,394$695$0$0$0$127,938
Interdepartmental revenues 161 4,509 8,011 0 0 (12,681) 0
Total operating revenues 110,010 21,903 8,706 0 0 (12,681) 127,938
Depreciation and amortization (6,888) (1,309) (1,363) 0 0 0 (9,560)
Other operating expenses (73,469) (22,948) (35) 0 (255) 12,681 (84,026)
Operating income (loss) 29,653 (2,354) 7,308 0 (255) 0 34,352
Other (deductions) income, net 435 123 0 2,091 (3) 0 2,646
Interest expense, net (2,646) (746) (655) 0 (52) 0 (4,099)
Income (loss) before taxes 27,442 (2,977) 6,653 2,091 (310) 0 32,899
Income tax (provision) benefit (10,874) 1,305 (2,670) (870) 119 0 (12,990)
Net income (loss)$16,568$(1,672)$3,983$1,221$(191)$0$19,909
               
Nine Months Ended September 30, 2011            
Operating revenues$291,804$119,748$3,884$0$0$0$415,436
Interdepartmental revenues 391 8,247 28,559 0 0 (37,197) 0
Total operating revenues 292,195 127,995 32,443 0 0 (37,197) 415,436
Depreciation and amortization (21,173) (4,246) (5,250) 0 0 0 (30,669)
Other operating expenses (218,556) (112,192) (138) 0 (649) 37,197 (294,338)
Operating income (loss) 52,466 11,557 27,055 0 (649) 0 90,429
Other income, net 68 21 0 6,434 357 0 6,880
Interest (expense) income, net (8,100) (2,284) (4,677) 0 14 0 (15,047)
Income (loss) before taxes 44,434 9,294 22,378 6,434 (278) 0 82,262
Income tax (provision) benefit (15,666) (3,532) (8,981) (2,592) 53 0 (30,718)
Net income (loss)$28,768$5,762$13,397$3,842$(225)$0$51,544
               
Nine Months Ended September 30, 2010            
Operating revenues$279,281$114,231$3,151$0$0$0$396,663
Interdepartmental revenues 398 10,353 22,631 0 0 (33,382) 0
Total operating revenues 279,679 124,584 25,782 0 0 (33,382) 396,663
Depreciation and amortization (20,520) (3,884) (3,859) 0 0 0 (28,263)
Other operating expenses (212,274) (112,554) (101) 0 (604) 33,382 (292,151)
Operating income (loss) 46,885 8,146 21,822 0 (604) 0 76,249
Other (deductions) income, net 2,372 669 (104) 6,374 3 0 9,314
Interest (expense) income, net (7,874) (2,221) (2,031) 0 74 0 (12,052)
Income (loss) before taxes 41,383 6,594 19,687 6,374 (527) 0 73,511
Income tax (provision) benefit (15,175) (2,336) (7,890) (2,589) 200 0 (27,790)
Net income (loss)$26,208$4,258$11,797$3,785$(327)$0$45,721

The following tables show segment information for MGE's operations for the indicated periods:

(In thousands)     Non-   Consolidation/  
MGE     Regulated Transmission Elimination Consolidated
  Electric Gas Energy Investment Entries Total
Three Months Ended September 30, 2011           
Operating revenues$114,963$17,249$1,360$0$0$133,572
Interdepartmental revenues 163 5,083 9,582 0 (14,828) 0
Total operating revenues 115,126 22,332 10,942 0 (14,828) 133,572
Depreciation and amortization (7,144) (1,377) (1,775) 0 0 (10,296)
Other operating expenses* (88,013) (22,057) (3,039) 0 14,828 (98,281)
Operating income (loss)* 19,969 (1,102) 6,128 0 0 24,995
Other (deductions) income, net* (14) (4) 0 1,297 0 1,279
Interest expense, net (2,747) (775) (1,660) 0 0 (5,182)
Net income (loss) 17,208 (1,881) 4,468 1,297 0 21,092
Less: Net income attributable to            
noncontrolling interest, net of tax 0 0 0 0 (6,010) (6,010)
Net income (loss) attributable to MGE$17,208$(1,881)$4,468$1,297$(6,010)$15,082
             
Three Months Ended September 30, 2010           
Operating revenues$109,849$17,394$695$0$0$127,938
Interdepartmental revenues 161 4,509 8,011 0 (12,681) 0
Total operating revenues 110,010 21,903 8,706 0 (12,681) 127,938
Depreciation and amortization (6,888) (1,309) (1,363) 0 0 (9,560)
Other operating expenses* (84,150) (21,589) (2,705) 0 12,681 (95,763)
Operating income (loss)* 18,972 (995) 4,638 0 0 22,615
Other income, net* 243 69 0 1,221 0 1,533
Interest expense, net (2,646) (746) (655) 0 0 (4,047)
Net income (loss) 16,569 (1,672) 3,983 1,221 0 20,101
Less: net income attributable to            
noncontrolling interest, net of tax 0 0 0 0 (5,108) (5,108)
Net income (loss) attributable to MGE$16,569$(1,672)$3,983$1,221$(5,108)$14,993
             
Nine Months Ended September 30, 2011           
Operating revenues$291,804$119,748$3,884$0$0$415,436
Interdepartmental revenues 391 8,247 28,559 0 (37,197) 0
Total operating revenues 292,195 127,995 32,443 0 (37,197) 415,436
Depreciation and amortization (21,173) (4,246) (5,250) 0 0 (30,669)
Other operating expenses* (234,145) (115,701) (9,119) 0 37,197 (321,768)
Operating income* 36,877 8,048 18,074 0 0 62,999
Other (deductions) income, net* (8) (2) 0 3,842 0 3,832
Interest expense, net (8,100) (2,284) (4,677) 0 0 (15,061)
Net income 28,769 5,762 13,397 3,842 0 51,770
Less: Net income attributable to            
noncontrolling interest, net of tax 0 0 0 0 (17,935) (17,935)
Net income attributable to MGE$28,769$5,762$13,397$3,842$(17,935)$33,835
             
Nine Months Ended September 30, 2010           
Operating revenues$279,281$114,231$3,151$0$0$396,663
Interdepartmental revenues 398 10,353 22,631 0 (33,382) 0
Total operating revenues 279,679 124,584 25,782 0 (33,382) 396,663
Depreciation and amortization (20,520) (3,884) (3,859) 0 0 (28,263)
Other operating expenses* (226,431) (114,603) (7,991) 0 33,382 (315,643)
Operating income* 32,728 6,097 13,932 0 0 52,757
Other (deductions) income, net* 1,355 382 (104) 3,785 0 5,418
Interest expense, net (7,874) (2,221) (2,031) 0 0 (12,126)
Net income 26,209 4,258 11,797 3,785 0 46,049
Less: net income attributable to            
noncontrolling interest, net of tax 0 0 0 0 (15,104) (15,104)
Net income attributable to MGE$26,209$4,258$11,797$3,785$(15,104)$30,945
             
*Amounts are shown net of the related tax expense, consistent with the presentation on the consolidated MGE Income Statement.