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Segment Information
 6 Months Ended
Jun. 30, 2012
Segment Information Disclosure [Abstract]  
Segment Information

13.       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 2011 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 June 30, 2012            
Operating revenues$96,339$18,629$2,253$0$0$0$117,221
Interdepartmental revenues 119 3,077 8,677 0 0 (11,873) 0
Total operating revenues 96,458 21,706 10,930 0 0 (11,873) 117,221
Depreciation and amortization (6,546) (1,389) (1,777) 0 0 0 (9,712)
Other operating expenses (72,265) (21,746) (37) 0 (253) 11,873 (82,428)
Operating income (loss) 17,647 (1,429) 9,116 0 (253) 0 25,081
Other income, net 96 27 0 2,242 184 0 2,549
Interest (expense) income, net (2,465) (695) (1,639) 0 35 0 (4,764)
Income (loss) before taxes 15,278 (2,097) 7,477 2,242 (34) 0 22,866
Income tax (provision) benefit (5,642) 933 (3,001) (900) 14 0 (8,596)
Net income (loss)$9,636$(1,164)$4,476$1,342$(20)$0$14,270
               
Three Months Ended June 30, 2011            
Operating revenues$90,834$25,062$1,363$0$0$0$117,259
Interdepartmental revenues 121 2,173 9,581 0 0 (11,875) 0
Total operating revenues 90,955 27,235 10,944 0 0 (11,875) 117,259
Depreciation and amortization (7,052) (1,532) (1,773) 0 0 0 (10,357)
Other operating expenses (69,522) (25,717) (55) 0 (286) 11,875 (83,705)
Operating income (loss) 14,381 (14) 9,116 0 (286) 0 23,197
Other (deductions) income, net (124) (35) 0 2,170 142 0 2,153
Interest (expense) income, net (2,653) (748) (1,669) 0 15 0 (5,055)
Income (loss) before taxes 11,604 (797) 7,447 2,170 (129) 0 20,295
Income tax (provision) benefit (4,121) 366 (2,990) (870) 43 0 (7,572)
Net income (loss)$7,483$(431)$4,457$1,300$(86)$0$12,723
               
Six Months Ended June 30, 2012            
Operating revenues$186,275$75,648$4,557$0$0$0$266,480
Interdepartmental revenues 228 6,063 17,353 0 0 (23,644) 0
Total operating revenues 186,503 81,711 21,910 0 0 (23,644) 266,480
Depreciation and amortization (13,024) (2,759) (3,553) 0 0 0 (19,336)
Other operating expenses (145,053) (71,487) (49) 0 (674) 23,644 (193,619)
Operating income (loss) 28,426 7,465 18,308 0 (674) 0 53,525
Other income, net 260 73 0 4,484 302 0 5,119
Interest (expense) income, net (5,192) (1,464) (3,284) 0 72 0 (9,868)
Income (loss) before taxes 23,494 6,074 15,024 4,484 (300) 0 48,776
Income tax (provision) benefit (8,427) (2,305) (6,030) (1,810) 114 0 (18,458)
Net income (loss)$15,067$3,769$8,994$2,674$(186)$0$30,318
               
Six Months Ended June 30, 2011            
Operating revenues$176,841$102,499$2,524$0$0$0$281,864
Interdepartmental revenues 228 3,164 18,977 0 0 (22,369) 0
Total operating revenues 177,069 105,663 21,501 0 0 (22,369) 281,864
Depreciation and amortization (14,029) (2,869) (3,475) 0 0 0 (20,373)
Other operating expenses (140,438) (88,770) (94) 0 (463) 22,369 (207,396)
Operating income (loss) 22,602 14,024 17,932 0 (463) 0 54,095
Other income, net 33 9 0 4,267 230 0 4,539
Interest expense, net (5,353) (1,509) (3,017) 0 (26) 0 (9,905)
Income (loss) before taxes 17,282 12,524 14,915 4,267 (259) 0 48,729
Income tax (provision) benefit (5,722) (4,882) (5,987) (1,722) 90 0 (18,223)
Net income (loss)$11,560$7,642$8,928$2,545$(169)$0$30,506

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 June 30, 2012           
Operating revenues$96,339$18,629$2,253$0$0$117,221
Interdepartmental revenues 119 3,077 8,677 0 (11,873) 0
Total operating revenues 96,458 21,706 10,930 0 (11,873) 117,221
Depreciation and amortization (6,546) (1,389) (1,777) 0 0 (9,712)
Other operating expenses* (77,849) (20,797) (3,038) 0 11,873 (89,811)
Operating income (loss)* 12,063 (480) 6,115 0 0 17,698
Other income, net* 38 11 0 1,342 0 1,391
Interest expense, net (2,465) (695) (1,639) 0 0 (4,799)
Net income (loss) 9,636 (1,164) 4,476 1,342 0 14,290
Less: Net income attributable to            
noncontrolling interest, net of tax 0 0 0 0 (6,080) (6,080)
Net income (loss) attributable to MGE$9,636$(1,164)$4,476$1,342$(6,080)$8,210
             
Three Months Ended June 30, 2011           
Operating revenues$90,834$25,062$1,363$0$0$117,259
Interdepartmental revenues 121 2,173 9,581 0 (11,875) 0
Total operating revenues 90,955 27,235 10,944 0 (11,875) 117,259
Depreciation and amortization (7,052) (1,532) (1,773) 0 0 (10,357)
Other operating expenses* (73,581) (25,333) (3,044) 0 11,875 (90,083)
Operating income* 10,322 370 6,127 0 0 16,819
Other (deductions) income, net* (185) (52) 0 1,299 0 1,062
Interest expense, net (2,653) (748) (1,669) 0 0 (5,070)
Net income (loss) 7,484 (430) 4,458 1,299 0 12,811
Less: net income attributable to            
noncontrolling interest, net of tax 0 0 0 0 (5,992) (5,992)
Net income (loss) attributable to MGE$7,484$(430)$4,458$1,299$(5,992)$6,819
             
Six Months Ended June 30, 2012           
Operating revenues$186,275$75,648$4,557$0$0$266,480
Interdepartmental revenues 228 6,063 17,353 0 (23,644) 0
Total operating revenues 186,503 81,711 21,910 0 (23,644) 266,480
Depreciation and amortization (13,024) (2,759) (3,553) 0 0 (19,336)
Other operating expenses* (153,357) (73,758) (6,079) 0 23,644 (209,550)
Operating income* 20,122 5,194 12,278 0 0 37,594
Other income, net* 137 39 0 2,674 0 2,850
Interest expense, net (5,192) (1,464) (3,284) 0 0 (9,940)
Net income 15,067 3,769 8,994 2,674 0 30,504
Less: Net income attributable to            
noncontrolling interest, net of tax 0 0 0 0 (12,152) (12,152)
Net income attributable to MGE$15,067$3,769$8,994$2,674$(12,152)$18,352
             
Six Months Ended June 30, 2011           
Operating revenues$176,841$102,499$2,524$0$0$281,864
Interdepartmental revenues 228 3,164 18,977 0 (22,369) 0
Total operating revenues 177,069 105,663 21,501 0 (22,369) 281,864
Depreciation and amortization (14,029) (2,869) (3,475) 0 0 (20,373)
Other operating expenses* (146,132) (93,644) (6,080) 0 22,369 (223,487)
Operating income* 16,908 9,150 11,946 0 0 38,004
Other income, net* 6 2 0 2,545 0 2,553
Interest expense, net (5,353) (1,509) (3,017) 0 0 (9,879)
Net income 11,561 7,643 8,929 2,545 0 30,678
Less: net income attributable to            
noncontrolling interest, net of tax 0 0 0 0 (11,925) (11,925)
Net income attributable to MGE$11,561$7,643$8,929$2,545$(11,925)$18,753
             
*Amounts are shown net of the related tax expense, consistent with the presentation on the consolidated MGE Income Statement.

The following table shows segment information for MGE Energy's and MGE's assets and capital expenditures:
                  
  Utility  Consolidated
(In thousands)     Assets       Consolidation/ 
MGE Energy     not NonregulatedTransmission All Elimination  
  Electric Gas Allocated  Energy Investment Others Entries Total
Assets:                 
June 30, 2012$868,718$258,569$24,595 $293,194$58,875$405,929$(403,330)$1,506,550
December 31, 2011 794,738 285,702 32,882  299,421 57,006 401,862 (412,729) 1,458,882
Capital Expenditures:                 
Six Months Ended June 30, 2012$33,479$5,601$0 $473$0$0$0$39,553
Year ended Dec. 31, 2011 47,206 15,830 0  2,140 0 0 0 65,176

  Utility  Consolidated
(In thousands)     Assets        
MGE     not NonregulatedTransmission Elimination  
  Electric Gas Allocated  Energy Investment Entries Total
Assets:               
June 30, 2012$868,718$258,569$24,595 $292,944$58,875$(26,398)$1,477,303
December 31, 2011 794,738 285,702 32,882  299,171 57,006 (35,706) 1,433,793
Capital Expenditures:               
Six Months Ended June 30, 2012$33,479$5,601$0 $473$0$0$39,553
Year ended Dec. 31, 2011 47,206 15,830 0  2,140 0 0 65,176