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Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Related Party Transaction [Line Items] |  |  |  |
Ownership percentage | 50.00% |  | 50.00% |
Services billings: | PNMR to PNM |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | $ 24,204 | $ 22,853 | $ 70,848 | $ 72,604
Services billings: | PNMR to TNMP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 9,645 | 8,639 | 28,075 | 27,082
Services billings: | PNM to TNMP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 106 | 97 | 295 | 286
Services billings: | TNMP to PNMR |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 35 | 35 | 106 | 106
Services billings: | PNMR to NMRD |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 74 | 68 | 199 | 163
Renewable energy purchases: | PNM from NMRD |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 3,723 | 757 | 7,646 | 2,331
Interconnection billings: | PNM from NMRD |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 0 | 0 | 350 | 0
Interconnection billings: | PNM to PNMR |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 0 | 0 | 0 | 0
Interest billings: | PNMR to PNM |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 0 | 1,004 | 6 | 2,909
Interest billings: | PNMR to TNMP |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 0 | 0 | 2 | 42
Interest billings: | PNM to PNMR |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | 60 | 75 | 218 | 224
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: | TNMP to PNMR |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount of related party transaction | $ 0 | $ 0 | $ 0 | $ 0

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- 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
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- Details
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- Details
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- Details
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- Details
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