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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | AOCI reports a measure for accumulated changes in equity that result from transactions and other economic events other than transactions with shareholders. Information regarding AOCI is as follows:
| Accumulated Other Comprehensive Income (Loss)
| Unrealized Gain on Available-for-Sale Securities |  | Pension Liability Adjustment |  | Fair Value Adjustment for Cash Flow Hedges |  | Total
|  |  | (In thousands) |  |
PNMR |  |  |  |  |  |  |
Balance at December 31, 2011 | $ | 15,634 |  |  | $ | (82,432 | ) |  | $ | (58 | ) |  | $ | (66,856 | )
Amounts reclassified from AOCI (pre-tax) | (37,269 | ) |  | 4,611 |  |  | 182 |  |  | (32,476 | )
Income tax impact of amounts reclassified | 14,755 |  |  | (1,825 | ) |  | (65 | ) |  | 12,865 |
Other OCI changes (pre-tax) | 38,548 |  |  | (30,084 | ) |  | (428 | ) |  | 8,036 |
Income tax impact of other OCI changes | (15,262 | ) |  | 11,910 |  |  | 153 |  |  | (3,199 | )
Net change after income taxes | 772 |  |  | (15,388 | ) |  | (158 | ) |  | (14,774 | )
Balance at December 31, 2012 | 16,406 |  |  | (97,820 | ) |  | (216 | ) |  | (81,630 | )
Amounts reclassified from AOCI (pre-tax) | (11,956 | ) |  | 6,364 |  |  | 207 |  |  | (5,385 | )
Income tax impact of amounts reclassified | 4,734 |  |  | (2,524 | ) |  | (73 | ) |  | 2,137 |
Other OCI changes (pre-tax) | 27,419 |  |  | 17,136 |  |  | (279 | ) |  | 44,276 |
Income tax impact of other OCI changes | (10,855 | ) |  | (6,781 | ) |  | 98 |  |  | (17,538 | )
Net change after income taxes | 9,342 |  |  | 14,195 |  |  | (47 | ) |  | 23,490 |
Balance at December 31, 2013 | 25,748 |  |  | (83,625 | ) |  | (263 | ) |  | (58,140 | )
Amounts reclassified from AOCI (pre-tax) | (13,862 | ) |  | 5,152 |  |  | 558 |  |  | (8,152 | )
Income tax impact of amounts reclassified | 5,461 |  |  | (2,032 | ) |  | (195 | ) |  | 3,234 |
Other OCI changes (pre-tax) | 17,473 |  |  | (15,282 | ) |  | (153 | ) |  | 2,038 |
Income tax impact of other OCI changes | (6,812 | ) |  | 6,024 |  |  | 53 |  |  | (735 | )
Net change after income taxes | 2,260 |  |  | (6,138 | ) |  | 263 |  |  | (3,615 | )
Balance at December 31, 2014 | $ | 28,008 |  |  | $ | (89,763 | ) |  | $ | — |  |  | $ | (61,755 | )
| Accumulated Other Comprehensive Income (Loss)
| Unrealized Gain on Available-for-Sale Securities |  | Pension Liability Adjustment |  | Fair Value Adjustment for Cash Flow Hedges |  | Total
|  |  | (In thousands) |  |
PNM |  |  |  |  |  |  |
Balance at December 31, 2011 | $ | 15,634 |  |  | $ | (82,432 | ) |  | $ | — |  |  | $ | (66,798 | )
Amounts reclassified from AOCI (pre-tax) | (37,269 | ) |  | 4,611 |  |  | — |  |  | (32,658 | )
Income tax impact of amounts reclassified | 14,755 |  |  | (1,825 | ) |  | — |  |  | 12,930 |
Other OCI changes (pre-tax) | 38,548 |  |  | (30,084 | ) |  | — |  |  | 8,464 |
Income tax impact of other OCI changes | (15,262 | ) |  | 11,910 |  |  | — |  |  | (3,352 | )
Net change after income taxes | 772 |  |  | (15,388 | ) |  | — |  |  | (14,616 | )
Balance at December 31, 2012 | 16,406 |  |  | (97,820 | ) |  | — |  |  | (81,414 | )
Amounts reclassified from AOCI (pre-tax) | (11,956 | ) |  | 6,364 |  |  | — |  |  | (5,592 | )
Income tax impact of amounts reclassified | 4,734 |  |  | (2,524 | ) |  | — |  |  | 2,210 |
Other OCI changes (pre-tax) | 27,419 |  |  | 17,136 |  |  | — |  |  | 44,555 |
Income tax impact of other OCI changes | (10,855 | ) |  | (6,781 | ) |  | — |  |  | (17,636 | )
Net change after income taxes | 9,342 |  |  | 14,195 |  |  | — |  |  | 23,537 |
Balance at December 31, 2013 | 25,748 |  |  | (83,625 | ) |  | — |  |  | (57,877 | )
Amounts reclassified from AOCI (pre-tax) | (13,862 | ) |  | 5,152 |  |  | — |  |  | (8,710 | )
Income tax impact of amounts reclassified | 5,461 |  |  | (2,032 | ) |  | — |  |  | 3,429 |
Other OCI changes (pre-tax) | 17,473 |  |  | (15,282 | ) |  | — |  |  | 2,191 |
Income tax impact of other OCI changes | (6,812 | ) |  | 6,024 |  |  | — |  |  | (788 | )
Net change after income taxes | 2,260 |  |  | (6,138 | ) |  | — |  |  | (3,878 | )
Balance at December 31, 2014 | $ | 28,008 |  |  | $ | (89,763 | ) |  | $ | — |  |  | $ | (61,755 | )
| Accumulated Other Comprehensive Income (Loss)
| Unrealized Gain on Available-for-Sale Securities |  | Pension Liability Adjustment |  | Fair Value Adjustment for Cash Flow Hedges |  | Total
|  |  | (In thousands) |  |
TNMP |  |  |  |  |  |  |
Balance at December 31, 2011 | $ | — |  |  | $ | — |  |  | $ | (58 | ) |  | $ | (58 | )
Amounts reclassified from AOCI (pre-tax) | — |  |  | — |  |  | 182 |  |  | 182 |
Income tax impact of amounts reclassified | — |  |  | — |  |  | (65 | ) |  | (65 | )
Other OCI changes (pre-tax) | — |  |  | — |  |  | (428 | ) |  | (428 | )
Income tax impact of other OCI changes | — |  |  | — |  |  | 153 |  |  | 153 |
Net change after income taxes | — |  |  | — |  |  | (158 | ) |  | (158 | )
Balance at December 31, 2012 | — |  |  | — |  |  | (216 | ) |  | (216 | )
Amounts reclassified from AOCI (pre-tax) | — |  |  | — |  |  | 207 |  |  | 207 |
Income tax impact of amounts reclassified | — |  |  | — |  |  | (73 | ) |  | (73 | )
Other OCI changes (pre-tax) | — |  |  | — |  |  | (279 | ) |  | (279 | )
Income tax impact of other OCI changes | — |  |  | — |  |  | 98 |  |  | 98 |
Net change after income taxes | — |  |  | — |  |  | (47 | ) |  | (47 | )
Balance at December 31, 2013 | — |  |  | — |  |  | (263 | ) |  | (263 | )
Amounts reclassified from AOCI (pre-tax) | — |  |  | — |  |  | 558 |  |  | 558 |
Income tax impact of amounts reclassified | — |  |  | — |  |  | (195 | ) |  | (195 | )
Other OCI changes (pre-tax) | — |  |  | — |  |  | (153 | ) |  | (153 | )
Income tax impact of other OCI changes | — |  |  | — |  |  | 53 |  |  | 53 |
Net change after income taxes | — |  |  | — |  |  | 263 |  |  | 263 |
Balance at December 31, 2014 | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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