XML 87 R60.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Services billings: | PNMR to PNM |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | $ 23,451 | $ 22,189 | $ 71,044 | $ 67,192
Services billings: | PNMR to TNMP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 7,828 | 6,593 | 23,771 | 20,881
Services billings: | PNM to TNMP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 115 | 105 | 302 | 347
Services billings: | TNMP to PNMR |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 35 | 10 | 106 | 30
Services billings: | TNMP to PNM |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 8 | 84 | 154 | 171
Interest billings: | PNMR to PNM |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 3 | 3 | 14 | 8
Interest billings: | PNMR to TNMP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 66 | 13 | 126 | 112
Interest billings: | PNM to PNMR |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 71 | 38 | 163 | 110
Income tax sharing payments: | PNMR to PNM |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 0 | 0 | 0 | 0
Income tax sharing payments: | PNMR to TNMP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | $ 0 | $ 0 | $ 0 | $ 0

X
- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 + Details
Name: | us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | pnm_RelatedPartyTransactionByTransactionTypeAxis=pnm_ServiceBillingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=pnm_PnmrToPnmMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=pnm_PnmrToTnmpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=pnm_PnmToTnmpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=pnm_TnmpToPnmrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=pnm_TNMPtoPNMMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnm_RelatedPartyTransactionByTransactionTypeAxis=pnm_InterestChargesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=pnm_PnmToPnmrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnm_RelatedPartyTransactionByTransactionTypeAxis=pnm_IncomeTaxSharingPaymentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |