XML 39 R31.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Pension and Other Postretirement Benefit Plans (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2012
Public Service Company of New Mexico [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Net Benefit Costs [Table Text Block] | The following tables present the components of the PNM Plans’ net periodic benefit cost:
| Three Months Ended June 30,
| Pension Plan |  | OPEB Plan |  | Executive Retirement Program
| 2012 |  | 2011 |  | 2012 |  | 2011 |  | 2012 |  | 2011
| (In thousands)
Components of Net Periodic |  |  |  |  |  |  |  |  |  |  |
Benefit Cost |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | — |  |  | $ | — |  |  | $ | 54 |  |  | $ | 65 |  |  | $ | — |  |  | $ | — |
Interest cost | 8,058 |  |  | 8,202 |  |  | 1,324 |  |  | 1,345 |  |  | 219 |  |  | 233 |
Long-term return on plan assets | (10,325 | ) |  | (9,269 | ) |  | (1,225 | ) |  | (1,347 | ) |  | — |  |  | — |
Amortization of net loss | 2,629 |  |  | 2,302 |  |  | 972 |  |  | 801 |  |  | 21 |  |  | 23 |
Amortization of prior service cost | 79 |  |  | 79 |  |  | (336 | ) |  | (662 | ) |  | — |  |  | — |
Net periodic benefit cost | $ | 441 |  |  | $ | 1,314 |  |  | $ | 789 |  |  | $ | 202 |  |  | $ | 240 |  |  | $ | 256 |
| Six Months Ended June 30,
| Pension Plan |  | Other Postretirement Benefits |  | Executive Retirement Program
| 2012 |  | 2011 |  | 2012 |  | 2011 |  | 2012 |  | 2011
|  |  |  |  | (In thousands) |  |  |  |
Components of Net Periodic |  |  |  |  |  |  |  |  |  |  |
Benefit Cost |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | — |  |  | $ | — |  |  | $ | 108 |  |  | $ | 129 |  |  | $ | — |  |  | $ | — |
Interest cost | 16,116 |  |  | 16,402 |  |  | 2,648 |  |  | 2,689 |  |  | 438 |  |  | 465 |
Long-term return on plan assets | (20,650 | ) |  | (18,537 | ) |  | (2,450 | ) |  | (2,694 | ) |  | — |  |  | — |
Amortization of net loss | 5,258 |  |  | 4,605 |  |  | 1,944 |  |  | 1,603 |  |  | 42 |  |  | 47 |
Amortization of prior service cost | 158 |  |  | 158 |  |  | (672 | ) |  | (1,324 | ) |  | — |  |  | — |
Net periodic benefit cost | $ | 882 |  |  | $ | 2,628 |  |  | $ | 1,578 |  |  | $ | 403 |  |  | $ | 480 |  |  | $ | 512 |
Texas-New Mexico Power Company [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Net Benefit Costs [Table Text Block] | The following tables present the components of the TNMP Plans’ net periodic benefit cost (income):
| Three Months Ended June 30,
| Pension Plan |  | OPEB Plan |  | Executive Retirement Program
| 2012 |  | 2011 |  | 2012 |  | 2011 |  | 2012 |  | 2011
|  |  |  |  | (In thousands) |  |  |  |
Components of Net Periodic |  |  |  |  |  |  |  |  |  |  |
Benefit Cost (Income) |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | — |  |  | $ | — |  |  | $ | 61 |  |  | $ | 77 |  |  | $ | — |  |  | $ | — |
Interest cost | 909 |  |  | 951 |  |  | 156 |  |  | 163 |  |  | 11 |  |  | 12 |
Long-term return on plan assets | (1,331 | ) |  | (1,368 | ) |  | (129 | ) |  | (133 | ) |  | — |  |  | — |
Amortization of net (gain) loss | 115 |  |  | 86 |  |  | (52 | ) |  | (48 | ) |  | — |  |  | — |
Amortization of prior service cost | — |  |  | — |  |  | 14 |  |  | 15 |  |  | — |  |  | — |
Net Periodic Benefit Cost (Income) | $ | (307 | ) |  | $ | (331 | ) |  | $ | 50 |  |  | $ | 74 |  |  | $ | 11 |  |  | $ | 12 |
| Six Months Ended June 30,
| Pension Plan |  | Other Postretirement Benefits |  | Executive Retirement Program
| 2012 |  | 2011 |  | 2012 |  | 2011 |  | 2012 |  | 2011
|  |  |  |  | (In thousands) |  |  |  |
Components of Net Periodic |  |  |  |  |  |  |  |  |  |  |
Benefit Cost (Income) |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | — |  |  | $ | — |  |  | $ | 122 |  |  | $ | 153 |  |  | $ | — |  |  | $ | — |
Interest cost | 1,818 |  |  | 1,900 |  |  | 312 |  |  | 327 |  |  | 22 |  |  | 23 |
Long-term return on plan assets | (2,662 | ) |  | (2,735 | ) |  | (258 | ) |  | (267 | ) |  | — |  |  | — |
Amortization of net (gain) loss | 230 |  |  | 173 |  |  | (104 | ) |  | (96 | ) |  | — |  |  | — |
Amortization of prior service cost | — |  |  | — |  |  | 28 |  |  | 30 |  |  | — |  |  | — |
Net Periodic Benefit Cost (Income) | $ | (614 | ) |  | $ | (662 | ) |  | $ | 100 |  |  | $ | 147 |  |  | $ | 22 |  |  | $ | 23 |

X
- Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration