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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | Information regarding AOCI is as follows:
| Accumulated Other Comprehensive Income (Loss)
| PNM |  | TNMP |  | PNMR
| Unrealized Gains on Available-for-Sale Securities |  | Pension Liability Adjustment |  | Total |  | Fair Value Adjustment for Cash Flow Hedges |  | Fair Value Adjustment for Cash Flow Hedges |  | Total
| (In thousands)
Balance at December 31, 2013 | $ | 25,748 |  |  | $ | (83,625 | ) |  | $ | (57,877 | ) |  | $ | (263 | ) |  | $ | — |  |  | $ | (58,140 | )
Amounts reclassified from AOCI (pre-tax) | (13,862 | ) |  | 5,152 |  |  | (8,710 | ) |  | 558 |  |  | — |  |  | (8,152 | )
Income tax impact of amounts reclassified | 5,461 |  |  | (2,032 | ) |  | 3,429 |  |  | (195 | ) |  | — |  |  | 3,234 |
Other OCI changes (pre-tax) | 17,473 |  |  | (15,282 | ) |  | 2,191 |  |  | (153 | ) |  | — |  |  | 2,038 |
Income tax impact of other OCI changes | (6,812 | ) |  | 6,024 |  |  | (788 | ) |  | 53 |  |  | — |  |  | (735 | )
Net after-tax change | 2,260 |  |  | (6,138 | ) |  | (3,878 | ) |  | 263 |  |  | — |  |  | (3,615 | )
Balance at December 31, 2014 | 28,008 |  |  | (89,763 | ) |  | (61,755 | ) |  | — |  |  | — |  |  | (61,755 | )
Amounts reclassified from AOCI (pre-tax) | (28,531 | ) |  | 5,952 |  |  | (22,579 | ) |  | — |  |  | — |  |  | (22,579 | )
Income tax impact of amounts reclassified | 11,181 |  |  | (2,332 | ) |  | 8,849 |  |  | — |  |  | — |  |  | 8,849 |
Other OCI changes (pre-tax) | 10,998 |  |  | (4,405 | ) |  | 6,593 |  |  | — |  |  | 72 |  |  | 6,665 |
Income tax impact of other OCI changes | (4,310 | ) |  | 1,726 |  |  | (2,584 | ) |  | — |  |  | (28 | ) |  | (2,612 | )
Net after-tax change | (10,662 | ) |  | 941 |  |  | (9,721 | ) |  | — |  |  | 44 |  |  | (9,677 | )
Balance at December 31, 2015 | 17,346 |  |  | (88,822 | ) |  | (71,476 | ) |  | — |  |  | 44 |  |  | (71,432 | )
Amounts reclassified from AOCI (pre-tax) | (22,139 | ) |  | 5,504 |  |  | (16,635 | ) |  | — |  |  | 764 |  |  | (15,871 | )
Income tax impact of amounts reclassified | 8,639 |  |  | (2,148 | ) |  | 6,491 |  |  | — |  |  | (298 | ) |  | 6,193 |
Other OCI changes (pre-tax) | 778 |  |  | (18,501 | ) |  | (17,723 | ) |  | — |  |  | (874 | ) |  | (18,597 | )
Income tax impact of other OCI changes | (304 | ) |  | 7,219 |  |  | 6,915 |  |  | — |  |  | 341 |  |  | 7,256 |
Net after-tax change | (13,026 | ) |  | (7,926 | ) |  | (20,952 | ) |  | — |  |  | (67 | ) |  | (21,019 | )
Balance at December 31, 2016 | $ | 4,320 |  |  | $ | (96,748 | ) |  | $ | (92,428 | ) |  | $ | — |  |  | $ | (23 | ) |  | $ | (92,451 | )

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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=66004124&loc=SL7669686-108580 + Details
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