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v2.4.1.9

Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Current Assets: |  |
Cash and cash equivalents | $ 70,703 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 65,755 us-gaap_CashAndCashEquivalentsAtCarryingValue
Accounts receivable, less reserves | 43,861 us-gaap_AccountsReceivableNetCurrent | 41,614 us-gaap_AccountsReceivableNetCurrent
Other accounts receivables, less reserves | 6,443 us-gaap_OtherReceivablesNetCurrent | 7,610 us-gaap_OtherReceivablesNetCurrent
Unbilled revenues | 25,366 mgee_UnbilledRevenues | 31,262 mgee_UnbilledRevenues
Materials and supplies, at average cost | 18,027 us-gaap_OtherInventorySupplies | 17,121 us-gaap_OtherInventorySupplies
Fossil fuel | 14,418 us-gaap_EnergyRelatedInventoryOtherFossilFuel | 8,098 us-gaap_EnergyRelatedInventoryOtherFossilFuel
Stored natural gas, at average cost | 8,398 us-gaap_EnergyRelatedInventoryGasStoredUnderground | 21,036 us-gaap_EnergyRelatedInventoryGasStoredUnderground
Prepaid taxes | 30,860 us-gaap_PrepaidTaxes | 38,910 us-gaap_PrepaidTaxes
Regulatory assets - current | 7,537 us-gaap_RegulatoryAssetsCurrent | 8,360 us-gaap_RegulatoryAssetsCurrent
Deferred income taxes - current | 109 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent | 3,482 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent
Other current assets | 10,219 us-gaap_OtherAssetsCurrent | 10,711 us-gaap_OtherAssetsCurrent
Total Current Assets | 235,941 us-gaap_AssetsCurrent | 253,959 us-gaap_AssetsCurrent
Other long-term receivables | 5,454 us-gaap_NotesAndLoansReceivableNetNoncurrent | 2,181 us-gaap_NotesAndLoansReceivableNetNoncurrent
Regulatory assets | 155,473 us-gaap_RegulatoryAssetsNoncurrent | 156,823 us-gaap_RegulatoryAssetsNoncurrent
Other deferred assets and other | 4,548 us-gaap_OtherAssetsNoncurrent | 4,837 us-gaap_OtherAssetsNoncurrent
Property, Plant, and Equipment: |  |
Property, plant, and equipment, net | 1,189,106 mgee_PropertyPlantAndEquipmentNetBeforeConstructionInProgress | 1,189,077 mgee_PropertyPlantAndEquipmentNetBeforeConstructionInProgress
Construction work in progress | 21,322 us-gaap_ConstructionInProgressGross | 19,029 us-gaap_ConstructionInProgressGross
Total Property, Plant, and Equipment | 1,210,428 us-gaap_PropertyPlantAndEquipmentNet | 1,208,106 us-gaap_PropertyPlantAndEquipmentNet
Investments | 72,347 us-gaap_Investments | 71,760 us-gaap_Investments
Total Assets | 1,684,191 us-gaap_Assets | 1,697,666 us-gaap_Assets
Current Liabilities: |  |
Long-term debt due within one year | 4,203 us-gaap_LongTermDebtCurrent | 4,182 us-gaap_LongTermDebtCurrent
Short-term debt | 0 us-gaap_ShortTermBorrowings | 7,000 us-gaap_ShortTermBorrowings
Accounts payable | 37,540 us-gaap_AccountsPayableCurrent | 41,655 us-gaap_AccountsPayableCurrent
Accrued interest and taxes | 3,999 mgee_Accruedinterestandtaxes | 5,086 mgee_Accruedinterestandtaxes
Accrued payroll related items | 8,318 us-gaap_EmployeeRelatedLiabilitiesCurrent | 11,241 us-gaap_EmployeeRelatedLiabilitiesCurrent
Derivative liabilities | 7,120 us-gaap_DerivativeLiabilitiesCurrent | 6,901 us-gaap_DerivativeLiabilitiesCurrent
Other current liabilities | 10,511 us-gaap_OtherLiabilitiesCurrent | 13,931 us-gaap_OtherLiabilitiesCurrent
Total Current Liabilities | 71,691 us-gaap_LiabilitiesCurrent | 89,996 us-gaap_LiabilitiesCurrent
Other Credits: |  |
Deferred income taxes | 342,400 us-gaap_DeferredTaxLiabilitiesNoncurrent | 342,045 us-gaap_DeferredTaxLiabilitiesNoncurrent
Investment tax credit - deferred | 1,179 us-gaap_AccumulatedDeferredInvestmentTaxCredit | 1,223 us-gaap_AccumulatedDeferredInvestmentTaxCredit
Regulatory liabilities | 23,981 us-gaap_RegulatoryLiabilityNoncurrent | 22,715 us-gaap_RegulatoryLiabilityNoncurrent
Accrued pension and other postretirement benefits | 79,742 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent | 90,201 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Derivative liabilities | 46,319 us-gaap_DerivativeLiabilitiesNoncurrent | 46,560 us-gaap_DerivativeLiabilitiesNoncurrent
Other deferred liabilities and other | 57,017 us-gaap_OtherLiabilitiesNoncurrent | 50,269 us-gaap_OtherLiabilitiesNoncurrent
Total Other Credits | 550,638 us-gaap_LiabilitiesNoncurrent | 553,013 us-gaap_LiabilitiesNoncurrent
Capitalization: |  |
Common shareholders equity | 667,658 us-gaap_StockholdersEquity | 659,401 us-gaap_StockholdersEquity
Long-term debt | 394,204 us-gaap_LongTermDebtNoncurrent | 395,256 us-gaap_LongTermDebtNoncurrent
Total Capitalization | 1,061,862 us-gaap_CapitalizationLongtermDebtAndEquity | 1,054,657 us-gaap_CapitalizationLongtermDebtAndEquity
Commitments and contingencies (see Footnote 8) |  |
Total Liabilities and Capitalization | 1,684,191 us-gaap_LiabilitiesAndStockholdersEquity | 1,697,666 us-gaap_LiabilitiesAndStockholdersEquity
MGE [Member] |  |
Current Assets: |  |
Cash and cash equivalents | 17,156 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 4,562 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Accounts receivable, less reserves | 43,861 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 41,614 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Affiliate receivables | 568 us-gaap_DueFromAffiliateCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 7,112 us-gaap_DueFromAffiliateCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Other accounts receivables, less reserves | 6,346 us-gaap_OtherReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 7,524 us-gaap_OtherReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Unbilled revenues | 25,366 mgee_UnbilledRevenues / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 31,262 mgee_UnbilledRevenues / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Materials and supplies, at average cost | 18,027 us-gaap_OtherInventorySupplies / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 17,121 us-gaap_OtherInventorySupplies / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Fossil fuel | 14,418 us-gaap_EnergyRelatedInventoryOtherFossilFuel / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 8,098 us-gaap_EnergyRelatedInventoryOtherFossilFuel / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Stored natural gas, at average cost | 8,398 us-gaap_EnergyRelatedInventoryGasStoredUnderground / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 21,035 us-gaap_EnergyRelatedInventoryGasStoredUnderground / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Prepaid taxes | 36,755 us-gaap_PrepaidTaxes / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 39,103 us-gaap_PrepaidTaxes / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Regulatory assets - current | 7,537 us-gaap_RegulatoryAssetsCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 8,360 us-gaap_RegulatoryAssetsCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Deferred income taxes - current | 0 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 1,271 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Other current assets | 10,203 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 10,683 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Total Current Assets | 188,635 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 197,745 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Affiliate receivable long-term | 5,163 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 5,295 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Regulatory assets | 155,473 us-gaap_RegulatoryAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 156,823 us-gaap_RegulatoryAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Other deferred assets and other | 7,953 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 4,977 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Property, Plant, and Equipment: |  |
Property, plant, and equipment, net | 1,188,392 mgee_PropertyPlantAndEquipmentNetBeforeConstructionInProgress / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 1,188,351 mgee_PropertyPlantAndEquipmentNetBeforeConstructionInProgress / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Construction work in progress | 21,322 us-gaap_ConstructionInProgressGross / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 19,029 us-gaap_ConstructionInProgressGross / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Total Property, Plant, and Equipment | 1,209,714 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 1,207,380 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Investments | 68,904 us-gaap_Investments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 68,402 us-gaap_Investments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Total Assets | 1,635,842 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 1,640,622 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Current Liabilities: |  |
Long-term debt due within one year | 4,203 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 4,182 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Short-term debt | 0 us-gaap_ShortTermBorrowings / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 7,000 us-gaap_ShortTermBorrowings / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Accounts payable | 37,540 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 41,654 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Accrued interest and taxes | 3,954 mgee_Accruedinterestandtaxes / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 5,039 mgee_Accruedinterestandtaxes / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Accrued payroll related items | 8,318 us-gaap_EmployeeRelatedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 11,241 us-gaap_EmployeeRelatedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Deferred income taxes | 898 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Derivative liabilities | 7,120 us-gaap_DerivativeLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 6,901 us-gaap_DerivativeLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Other current liabilities | 10,159 us-gaap_OtherLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 11,350 us-gaap_OtherLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Total Current Liabilities | 72,192 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 87,367 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Other Credits: |  |
Deferred income taxes | 335,002 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 334,773 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Investment tax credit - deferred | 1,179 us-gaap_AccumulatedDeferredInvestmentTaxCredit / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 1,223 us-gaap_AccumulatedDeferredInvestmentTaxCredit / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Regulatory liabilities | 23,981 us-gaap_RegulatoryLiabilityNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 22,715 us-gaap_RegulatoryLiabilityNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Accrued pension and other postretirement benefits | 79,742 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 90,201 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Derivative liabilities | 46,319 us-gaap_DerivativeLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 46,560 us-gaap_DerivativeLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Other deferred liabilities and other | 57,016 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 50,267 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Total Other Credits | 543,239 us-gaap_LiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 545,739 us-gaap_LiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Capitalization: |  |
Common shareholders equity | 498,105 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 486,571 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Noncontrolling interest | 128,102 us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 125,689 us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Total Equity | 626,207 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 612,260 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Long-term debt | 394,204 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 395,256 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Total Capitalization | 1,020,411 us-gaap_CapitalizationLongtermDebtAndEquity / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 1,007,516 us-gaap_CapitalizationLongtermDebtAndEquity / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Commitments and contingencies (see Footnote 8) |  |
Total Liabilities and Capitalization | $ 1,635,842 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 1,640,622 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_SubsidiariesMember

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