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Related Party Transactions | 12 Months Ended
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Dec. 31, 2012
Related Party Transactions [Abstract] |
Related Party Transactions | Related Party Transactions PNMR, PNM, and TNMP are considered related parties as defined under GAAP. TNMP provides transmission and distribution services to First Choice. On November 1, 2011, PNMR sold First Choice. TNMP revenues from First Choice through October 31, 2011 are considered related party revenues and included in the table below. PNMR Services Company provides corporate services to PNMR and its subsidiaries in accordance with shared services agreements. These services are billed at cost on a monthly basis to the business units. Optim Energy was a related party prior to September 23, 2011. PNMR Services Company provided corporate services to Optim Energy under a services agreement. There was also a services agreement for Optim Energy to provide services to PNMR. PNMR files a consolidated federal income tax return with its affiliated companies. A tax allocation agreement exists between PNMR and each of its affiliated companies. These agreements provide that the subsidiary company will compute its taxable income on a stand-alone basis. If the result is a net tax liability, such amount shall be paid to PNMR. If there are net operating losses and/or tax credits, the subsidiary shall receive payment for the tax savings from PNMR to the extent that PNMR is able to utilize those benefits. See Note 6 for information on intercompany borrowing arrangements. See Note 21 for information concerning Optim Energy. The table below summarizes the nature and amount of related party transactions of PNMR, PNM and TNMP:
| Year Ended December 31,
| 2012 |  | 2011 |  | 2010
|  |  | (In thousands) |  |
Electricity, transmission and distribution related services billings: |  |  |  |  |
TNMP to PNMR | $ | — |  |  | $ | 33,813 |  |  | $ | 39,084 |
Services billings: |  |  |  |  |
PNMR to PNM | 99,986 |  |  | 98,914 |  |  | 93,602 |
PNMR to TNMP | 29,110 |  |  | 29,353 |  |  | 25,455 |
PNM to TNMP | 595 |  |  | 550 |  |  | 400 |
TNMP to PNMR | 15 |  |  | 164 |  |  | 319 |
PNMR to Optim Energy | — |  |  | 4,083 |  |  | 5,778 |
Optim Energy to PNMR | — |  |  | 23 |  |  | 173 |
Income tax sharing payments: |  |  |  |  |
PNMR to TNMP | 1,951 |  |  | — |  |  | 13,869 |
PNMR to PNM | 63,114 |  |  | — |  |  | 59,298 |
Interest payments: |  |  |  |  |
PNM to PNMR | 1 |  |  | 54 |  |  | 13 |
TNMP to PNMR | 137 |  |  | 40 |  |  | 281 |

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 1-4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: 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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph b -Article 3A Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Article 4 + Details
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