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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2018
SEC Schedule, 12-09, 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: |  |  |  |  |  |  |  |  |  |
| 2016 |  | $ | 1,397 |  |  | $ | 2,885 |  |  | $ | — |  |  | $ | 3,073 |  |  | $ | 1,209 |
| 2017 |  | $ | 1,209 |  |  | $ | 2,619 |  |  | $ | — |  |  | $ | 2,747 |  |  | $ | 1,081 |
| 2018 |  | $ | 1,081 |  |  | $ | 3,360 |  |  | $ | — |  |  | $ | 3,035 |  |  | $ | 1,406 |
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: |  |  |  |  |  |  |  |  |  |
| 2016 |  | $ | 1,397 |  |  | $ | 2,871 |  |  | $ | — |  |  | $ | 3,059 |  |  | $ | 1,209 |
| 2017 |  | $ | 1,209 |  |  | $ | 2,615 |  |  | $ | — |  |  | $ | 2,743 |  |  | $ | 1,081 |
| 2018 |  | $ | 1,081 |  |  | $ | 3,338 |  |  | $ | — |  |  | $ | 3,013 |  |  | $ | 1,406 |
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: |  |  |  |  |  |  |  |  |  |
2016 |  | $ | — |  |  | $ | 14 |  |  | $ | — |  |  | $ | 14 |  |  | $ | — |
2017 |  | $ | — |  |  | $ | 4 |  |  | $ | — |  |  | $ | 4 |  |  | $ | — |
2018 |  | $ | — |  |  | $ | 22 |  |  | $ | — |  |  | $ | 22 |  |  | $ | — |

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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