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Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Cash Flows From Operating Activities: |  |
Net Earnings | $ 17,852 us-gaap_ProfitLoss | $ 16,131 us-gaap_ProfitLoss
Net earnings | 14,340 us-gaap_NetIncomeLoss | 12,468 us-gaap_NetIncomeLoss
Adjustments to reconcile net earnings to net cash flows from operating activities: |  |
Depreciation and amortization | 55,062 us-gaap_DepreciationDepletionAndAmortization | 51,949 us-gaap_DepreciationDepletionAndAmortization
Deferred income tax expense | 8,326 us-gaap_DeferredIncomeTaxExpenseBenefit | 6,276 us-gaap_DeferredIncomeTaxExpenseBenefit
Net unrealized (gains) losses on commodity derivatives | 1,720 us-gaap_UnrealizedGainLossOnDerivatives | 2,761 us-gaap_UnrealizedGainLossOnDerivatives
Realized (gains) on available-for-sale securities | (4,024)us-gaap_GainLossOnSaleOfInvestments | (2,573)us-gaap_GainLossOnSaleOfInvestments
Stock based compensation expense | 2,214 us-gaap_ShareBasedCompensation | 2,131 us-gaap_ShareBasedCompensation
Regulatory disallowances | 215 pnm_RegulatoryDisallowance | 0 pnm_RegulatoryDisallowance
Other, net | 148 us-gaap_OtherNoncashIncomeExpense | 1,005 us-gaap_OtherNoncashIncomeExpense
Changes in certain assets and liabilities: |  |
Accounts receivable and unbilled revenues | 12,170 pnm_IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues | 17,207 pnm_IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues
Materials, supplies, and fuel stock | (2,657)us-gaap_IncreaseDecreaseInInventories | 5,894 us-gaap_IncreaseDecreaseInInventories
Other current assets | 3,817 us-gaap_IncreaseDecreaseInOtherCurrentAssets | 8,344 us-gaap_IncreaseDecreaseInOtherCurrentAssets
Other assets | 4,220 us-gaap_IncreaseDecreaseInOtherOperatingAssets | 6,386 us-gaap_IncreaseDecreaseInOtherOperatingAssets
Accounts payable | (2,639)us-gaap_IncreaseDecreaseInAccountsPayable | (34,373)us-gaap_IncreaseDecreaseInAccountsPayable
Accrued interest and taxes | 24,811 pnm_IncreaseDecreaseInAccruedInterestAndTaxes | 25,813 pnm_IncreaseDecreaseInAccruedInterestAndTaxes
Other current liabilities | (21,223)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities | (30,359)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities
Other liabilities | (33,278)us-gaap_IncreaseDecreaseInOtherOperatingLiabilities | (199)us-gaap_IncreaseDecreaseInOtherOperatingLiabilities
Net cash flows from operating activities | 66,734 us-gaap_NetCashProvidedByUsedInOperatingActivities | 76,393 us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash Flows From Investing Activities: |  |
Additions to utility and non-utility plant | (100,214)us-gaap_PaymentsToAcquireProductiveAssets | (83,838)us-gaap_PaymentsToAcquireProductiveAssets
Proceeds from sales of available-for-sale securities | 31,852 us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities | 22,804 us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities
Purchases of available-for-sale securities | (32,661)us-gaap_PaymentsToAcquireMarketableSecurities | (23,612)us-gaap_PaymentsToAcquireMarketableSecurities
Return of principal on PVNGS lessor notes | 14,188 pnm_ReturnOfPrincipalOnPvngsLessorNotes | 10,231 pnm_ReturnOfPrincipalOnPvngsLessorNotes
Other, net | 144 us-gaap_PaymentsForProceedsFromOtherInvestingActivities | 13 us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Net cash flows from investing activities | (86,691)us-gaap_NetCashProvidedByUsedInInvestingActivities | (74,402)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash Flows From Financing Activities: |  |
Short-term borrowings (repayments), net | (5,600)us-gaap_ProceedsFromRepaymentsOfShortTermDebt | (49,200)us-gaap_ProceedsFromRepaymentsOfShortTermDebt
Long-term borrowings | 150,000 us-gaap_ProceedsFromIssuanceOfLongTermDebt | 175,000 us-gaap_ProceedsFromIssuanceOfLongTermDebt
Repayment of long-term debt | 0 us-gaap_RepaymentsOfLongTermDebt | (75,000)us-gaap_RepaymentsOfLongTermDebt
Proceeds from stock option exercise | 6,847 us-gaap_ProceedsFromStockOptionsExercised | 3,258 us-gaap_ProceedsFromStockOptionsExercised
Awards of common stock | (17,140)us-gaap_PaymentsForRepurchaseOfCommonStock | (11,639)us-gaap_PaymentsForRepurchaseOfCommonStock
Dividends paid | (16,063)us-gaap_PaymentsOfOrdinaryDividends | (14,868)us-gaap_PaymentsOfOrdinaryDividends
Valencia’s transactions with its owner | (4,160)us-gaap_PaymentsOfDividendsMinorityInterest | (4,369)us-gaap_PaymentsOfDividendsMinorityInterest
Other, net | 194 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities | (539)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Net cash flows from financing activities | 114,078 us-gaap_NetCashProvidedByUsedInFinancingActivities | 22,643 us-gaap_NetCashProvidedByUsedInFinancingActivities
Change in Cash and Cash Equivalents | 94,121 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 24,634 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and Cash Equivalents at Beginning of Period | 28,274 us-gaap_CashAndCashEquivalentsAtCarryingValue | 2,533 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and Cash Equivalents at End of Period | 122,395 us-gaap_CashAndCashEquivalentsAtCarryingValue | 27,167 us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental Cash Flow Disclosures: |  |
Interest paid, net of amounts capitalized | 6,191 pnm_InterestPaidNetOfCapitalizedInterestAndNetOfDebtAllowanceForFundsUsedDuringConstruction | 4,718 pnm_InterestPaidNetOfCapitalizedInterestAndNetOfDebtAllowanceForFundsUsedDuringConstruction
Income taxes paid (refunded), net | (1,450)us-gaap_IncomeTaxesPaidNet | (1,419)us-gaap_IncomeTaxesPaidNet
Supplemental schedule of noncash investing activities: |  |
Changes in accrued plant additions | 5,186 us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1 | (13,095)us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1
Public Service Company of New Mexico [Member] |  |
Cash Flows From Operating Activities: |  |
Net Earnings | 13,502 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 11,205 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Net earnings | 10,122 us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 7,674 us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Adjustments to reconcile net earnings to net cash flows from operating activities: |  |
Depreciation and amortization | 37,470 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 35,950 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Deferred income tax expense | 5,908 us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 4,185 us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Net unrealized (gains) losses on commodity derivatives | 1,720 us-gaap_UnrealizedGainLossOnDerivatives / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 2,761 us-gaap_UnrealizedGainLossOnDerivatives / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Realized (gains) on available-for-sale securities | (4,024)us-gaap_GainLossOnSaleOfInvestments / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (2,573)us-gaap_GainLossOnSaleOfInvestments / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Regulatory disallowances | 215 pnm_RegulatoryDisallowance / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 0 pnm_RegulatoryDisallowance / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Other, net | (974)us-gaap_OtherNoncashIncomeExpense / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 1,042 us-gaap_OtherNoncashIncomeExpense / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Changes in certain assets and liabilities: |  |
Accounts receivable and unbilled revenues | 12,385 pnm_IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 15,018 pnm_IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Materials, supplies, and fuel stock | (2,558)us-gaap_IncreaseDecreaseInInventories / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 5,974 us-gaap_IncreaseDecreaseInInventories / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Other current assets | 5,110 us-gaap_IncreaseDecreaseInOtherCurrentAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 6,809 us-gaap_IncreaseDecreaseInOtherCurrentAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Other assets | 4,479 us-gaap_IncreaseDecreaseInOtherOperatingAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 6,042 us-gaap_IncreaseDecreaseInOtherOperatingAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Accounts payable | 4,622 us-gaap_IncreaseDecreaseInAccountsPayable / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (31,847)us-gaap_IncreaseDecreaseInAccountsPayable / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Accrued interest and taxes | 22,832 pnm_IncreaseDecreaseInAccruedInterestAndTaxes / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 22,362 pnm_IncreaseDecreaseInAccruedInterestAndTaxes / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Other current liabilities | (18,836)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (29,609)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Other liabilities | (30,178)us-gaap_IncreaseDecreaseInOtherOperatingLiabilities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (806)us-gaap_IncreaseDecreaseInOtherOperatingLiabilities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Net cash flows from operating activities | 51,673 us-gaap_NetCashProvidedByUsedInOperatingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 46,513 us-gaap_NetCashProvidedByUsedInOperatingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Cash Flows From Investing Activities: |  |
Additions to utility and non-utility plant | (81,988)us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (51,594)us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Proceeds from sales of available-for-sale securities | 31,852 us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 22,804 us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Purchases of available-for-sale securities | (32,661)us-gaap_PaymentsToAcquireMarketableSecurities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (23,612)us-gaap_PaymentsToAcquireMarketableSecurities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Return of principal on PVNGS lessor notes | 14,188 pnm_ReturnOfPrincipalOnPvngsLessorNotes / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 10,231 pnm_ReturnOfPrincipalOnPvngsLessorNotes / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Other, net | 144 us-gaap_PaymentsForProceedsFromOtherInvestingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (1)us-gaap_PaymentsForProceedsFromOtherInvestingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Net cash flows from investing activities | (68,465)us-gaap_NetCashProvidedByUsedInInvestingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (42,172)us-gaap_NetCashProvidedByUsedInInvestingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Cash Flows From Financing Activities: |  |
Short-term borrowings (repayments), net | 0 us-gaap_ProceedsFromRepaymentsOfShortTermDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (49,200)us-gaap_ProceedsFromRepaymentsOfShortTermDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Short-term borrowings (repayments), affiliate, net | 0 us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (32,500)us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Long-term borrowings | 0 us-gaap_ProceedsFromIssuanceOfLongTermDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 175,000 us-gaap_ProceedsFromIssuanceOfLongTermDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Repayment of long-term debt | 0 us-gaap_RepaymentsOfLongTermDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (75,000)us-gaap_RepaymentsOfLongTermDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Dividends paid | (132)us-gaap_PaymentsOfOrdinaryDividends / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (132)us-gaap_PaymentsOfOrdinaryDividends / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Valencia’s transactions with its owner | (4,160)us-gaap_PaymentsOfDividendsMinorityInterest / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (4,369)us-gaap_PaymentsOfDividendsMinorityInterest / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Other, net | (144)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (409)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Net cash flows from financing activities | (4,436)us-gaap_NetCashProvidedByUsedInFinancingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 13,390 us-gaap_NetCashProvidedByUsedInFinancingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Change in Cash and Cash Equivalents | (21,228)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 17,731 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Cash and Cash Equivalents at Beginning of Period | 25,480 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 21 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Cash and Cash Equivalents at End of Period | 4,252 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 17,752 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Supplemental Cash Flow Disclosures: |  |
Interest paid, net of amounts capitalized | 4,287 pnm_InterestPaidNetOfCapitalizedInterestAndNetOfDebtAllowanceForFundsUsedDuringConstruction / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | 4,222 pnm_InterestPaidNetOfCapitalizedInterestAndNetOfDebtAllowanceForFundsUsedDuringConstruction / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Income taxes paid (refunded), net | (1,450)us-gaap_IncomeTaxesPaidNet / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (215)us-gaap_IncomeTaxesPaidNet / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Supplemental schedule of noncash investing activities: |  |
Changes in accrued plant additions | 7,421 us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1 / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember | (8,133)us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1 / us-gaap_StatementBusinessSegmentsAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Texas-New Mexico Power Company [Member] |  |
Cash Flows From Operating Activities: |  |
Net Earnings | 7,694 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 6,803 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Net earnings | 7,694 us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 6,803 us-gaap_NetIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Adjustments to reconcile net earnings to net cash flows from operating activities: |  |
Depreciation and amortization | 13,831 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 12,851 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Deferred income tax expense | 4,170 us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 3,665 us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Other, net | 0 us-gaap_OtherNoncashIncomeExpense / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | (36)us-gaap_OtherNoncashIncomeExpense / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Changes in certain assets and liabilities: |  |
Accounts receivable and unbilled revenues | (215)pnm_IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 2,189 pnm_IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Materials, supplies, and fuel stock | (99)us-gaap_IncreaseDecreaseInInventories / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | (81)us-gaap_IncreaseDecreaseInInventories / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Other current assets | 981 us-gaap_IncreaseDecreaseInOtherCurrentAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 2,446 us-gaap_IncreaseDecreaseInOtherCurrentAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Other assets | (139)us-gaap_IncreaseDecreaseInOtherOperatingAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 302 us-gaap_IncreaseDecreaseInOtherOperatingAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Accounts payable | (7,640)us-gaap_IncreaseDecreaseInAccountsPayable / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | (2,551)us-gaap_IncreaseDecreaseInAccountsPayable / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Accrued interest and taxes | (2,006)pnm_IncreaseDecreaseInAccruedInterestAndTaxes / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 335 pnm_IncreaseDecreaseInAccruedInterestAndTaxes / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Other current liabilities | 368 us-gaap_IncreaseDecreaseInOtherCurrentLiabilities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | (1,768)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Other liabilities | (3,631)us-gaap_IncreaseDecreaseInOtherOperatingLiabilities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 1,465 us-gaap_IncreaseDecreaseInOtherOperatingLiabilities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Net cash flows from operating activities | 13,314 us-gaap_NetCashProvidedByUsedInOperatingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 25,620 us-gaap_NetCashProvidedByUsedInOperatingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Cash Flows From Investing Activities: |  |
Additions to utility and non-utility plant | (13,763)us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | (27,420)us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Net cash flows from investing activities | (13,763)us-gaap_NetCashProvidedByUsedInInvestingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | (27,420)us-gaap_NetCashProvidedByUsedInInvestingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Cash Flows From Financing Activities: |  |
Short-term borrowings (repayments), net | (5,000)us-gaap_ProceedsFromRepaymentsOfShortTermDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 0 us-gaap_ProceedsFromRepaymentsOfShortTermDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Short-term borrowings (repayments), affiliate, net | 5,800 us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 1,800 us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Net cash flows from financing activities | 800 us-gaap_NetCashProvidedByUsedInFinancingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 1,800 us-gaap_NetCashProvidedByUsedInFinancingActivities / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Change in Cash and Cash Equivalents | 351 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 0 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Cash and Cash Equivalents at Beginning of Period | 1 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 1 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Cash and Cash Equivalents at End of Period | 352 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 1 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Supplemental Cash Flow Disclosures: |  |
Interest paid, net of amounts capitalized | 1,664 pnm_InterestPaidNetOfCapitalizedInterestAndNetOfDebtAllowanceForFundsUsedDuringConstruction / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | 73 pnm_InterestPaidNetOfCapitalizedInterestAndNetOfDebtAllowanceForFundsUsedDuringConstruction / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Income taxes paid (refunded), net | 0 us-gaap_IncomeTaxesPaidNet / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | (1,204)us-gaap_IncomeTaxesPaidNet / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember
Supplemental schedule of noncash investing activities: |  |
Changes in accrued plant additions | $ (2,537)us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1 / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember | $ (1,109)us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1 / us-gaap_StatementBusinessSegmentsAxis = pnm_TexasNewMexicoPowerCompanyMember

X
- Definition The net change during the period in the amount due from customers for the credit sale of goods and services; includes accounts receivable billed and unbilled. + References No definition available. + Details
Name: | pnm_IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase (Decrease) In Accrued Interest And Taxes + References No definition available. + Details
Name: | pnm_IncreaseDecreaseInAccruedInterestAndTaxes
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
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- Definition Amount of cash inflow (outflow) from long-term debt by a related party. Related parties, include, but are not limited to, affiliates, owners or officers and their immediate families, and pension trusts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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