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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2012
Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts | SCHEDULE II PNM RESOURCES, INC. AND SUBSIDIARIES VALUATION AND QUALIFYING ACCOUNTS
|  |  |  |  | Additions |  | Deductions |  |
| Description |  | Balance at beginning of year |  | Charged to costs and expenses |  | Charged to other accounts |  | Write-offs and other |  | Balance at end of year
|  |  |  |  | (In thousands) |  |
| Allowance for doubtful accounts, year ended December 31: |  |  |  |  |  |  |  |  |  |
| 2010 |  | $ | 12,783 |  |  | $ | 27,566 |  |  | $ | — |  |  | $ | 29,171 |  |  | $ | 11,178 |
| 2011 |  | $ | 11,178 |  |  | $ | 24,116 |  |  | $ | — |  |  | $ | 33,516 |  | (1) | $ | 1,778 |
| 2012 |  | $ | 1,778 |  |  | $ | 3,367 |  |  | $ | — |  |  | $ | 3,394 |  |  | $ | 1,751 |
(1) Includes reduction of $11,818 due to the sale of First Choice on November 1, 2011. SCHEDULE II PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARY A WHOLLY OWNED SUBSIDIARY OF PNM RESOURCES, INC. VALUATION AND QUALIFYING ACCOUNTS
|  |  |  |  | Additions |  | Deductions |  |
| Description |  | Balance at beginning of year |  | Charged to costs and expenses |  | Charged to other accounts |  | Write-offs |  | Balance at end of year
|  |  |  |  | (In thousands) |  |
| Allowance for doubtful accounts, year ended December 31: |  |  |  |  |  |  |  |  |  |
| 2010 |  | $ | 1,483 |  |  | $ | 2,600 |  |  | $ | — |  |  | $ | 2,600 |  |  | $ | 1,483 |
| 2011 |  | $ | 1,483 |  |  | $ | 3,736 |  |  | $ | — |  |  | $ | 3,441 |  |  | $ | 1,778 |
| 2012 |  | $ | 1,778 |  |  | $ | 3,384 |  |  | $ | — |  |  | $ | 3,411 |  |  | $ | 1,751 |
SCHEDULE II TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES A WHOLLY OWNED SUBSIDIARY OF PNM RESOURCES, INC. VALUATION AND QUALIFYING ACCOUNTS
|  |  |  | Additions |  | Deductions |  |
Description |  | Balance at beginning of year |  | Charged to costs and expenses |  | Charged to other accounts |  | Write-offs |  | Balance at end of year
|  |  |  | (In thousands) |  |
Allowance for doubtful accounts, year ended December 31: |  |  |  |  |  |  |  |  |  |
2010 |  | $ | — |  |  | $ | 22 |  |  | $ | — |  |  | $ | 22 |  |  | $ | — |
2011 |  | $ | — |  |  | $ | 33 |  |  | $ | — |  |  | $ | 33 |  |  | $ | — |
2012 |  | $ | — |  |  | $ | (17 | ) |  | $ | — |  |  | $ | (17 | ) |  | $ | — |

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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