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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2017
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | Information regarding accumulated other comprehensive income (loss) for the six months ended June 30, 2017 and 2016 is as follows:
| Accumulated Other Comprehensive Income (Loss)
| PNM |  | PNMR
| Unrealized |  |  |  |  |  | Fair Value |  |
| Gains on |  |  |  |  |  | Adjustment |  |
| Available-for- |  | Pension |  |  |  | for Cash |  |
| Sale |  | Liability |  |  |  | Flow |  |
| Securities |  | Adjustment |  | Total |  | Hedges |  | Total
| (In thousands)
Balance at December 31, 2016 | $ | 4,320 |  |  | $ | (96,748 | ) |  | $ | (92,428 | ) |  | $ | (23 | ) |  | $ | (92,451 | )
Amounts reclassified from AOCI (pre-tax) | (6,961 | ) |  | 3,226 |  |  | (3,735 | ) |  | 323 |  |  | (3,412 | )
Income tax impact of amounts reclassified | 2,701 |  |  | (1,252 | ) |  | 1,449 |  |  | (125 | ) |  | 1,324 |
Other OCI changes (pre-tax) | 14,903 |  |  | — |  |  | 14,903 |  |  | (288 | ) |  | 14,615 |
Income tax impact of other OCI changes | (5,783 | ) |  | — |  |  | (5,783 | ) |  | 112 |  |  | (5,671 | )
Net after-tax change | 4,860 |  |  | 1,974 |  |  | 6,834 |  |  | 22 |  |  | 6,856 |
Balance at June 30, 2017 | $ | 9,180 |  |  | $ | (94,774 | ) |  | $ | (85,594 | ) |  | $ | (1 | ) |  | $ | (85,595 | )
Balance at December 31, 2015 | $ | 17,346 |  |  | $ | (88,822 | ) |  | $ | (71,476 | ) |  | $ | 44 |  |  | $ | (71,432 | )
Amounts reclassified from AOCI (pre-tax) | (5,049 | ) |  | 2,752 |  |  | (2,297 | ) |  | 371 |  |  | (1,926 | )
Income tax impact of amounts reclassified | 1,970 |  |  | (1,074 | ) |  | 896 |  |  | (145 | ) |  | 751 |
Other OCI changes (pre-tax) | (1,695 | ) |  | — |  |  | (1,695 | ) |  | (1,746 | ) |  | (3,441 | )
Income tax impact of other OCI changes | 661 |  |  | — |  |  | 661 |  |  | 681 |  |  | 1,342 |
Net after-tax change | (4,113 | ) |  | 1,678 |  |  | (2,435 | ) |  | (839 | ) |  | (3,274 | )
Balance at June 30, 2016 | $ | 13,233 |  |  | $ | (87,144 | ) |  | $ | (73,911 | ) |  | $ | (795 | ) |  | $ | (74,706 | )

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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=84228862&loc=SL7669686-108580 + Details
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