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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning Balance |  |  | $ (92,451) | $ (71,432)
Amounts reclassified from AOCI (pre-tax) |  |  | (3,412) | (1,926)
Income tax impact of amounts reclassified |  |  | 1,324 | 751
Other OCI changes (pre-tax) |  |  | 14,615 | (3,441)
Income tax impact of other OCI changes |  |  | (5,671) | 1,342
Total Other Comprehensive Income (Loss) | $ 2,863 | $ 92 | 6,856 | (3,274)
Ending Balance | (85,595) | (74,706) | (85,595) | (74,706)
Fair Value Adjustment for Cash Flow Hedges |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning Balance |  |  | (23) | 44
Amounts reclassified from AOCI (pre-tax) |  |  | 323 | 371
Income tax impact of amounts reclassified |  |  | (125) | (145)
Other OCI changes (pre-tax) |  |  | (288) | (1,746)
Income tax impact of other OCI changes |  |  | 112 | 681
Total Other Comprehensive Income (Loss) |  |  | 22 | (839)
Ending Balance | (1) | (795) | (1) | (795)
PNM |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning Balance |  |  | (92,428) | (71,476)
Amounts reclassified from AOCI (pre-tax) |  |  | (3,735) | (2,297)
Income tax impact of amounts reclassified |  |  | 1,449 | 896
Other OCI changes (pre-tax) |  |  | 14,903 | (1,695)
Income tax impact of other OCI changes |  |  | (5,783) | 661
Total Other Comprehensive Income (Loss) | 2,796 | 234 | 6,834 | (2,435)
Ending Balance | (85,594) | (73,911) | (85,594) | (73,911)
PNM | Unrealized Gains on Available-for-Sale Securities |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning Balance |  |  | 4,320 | 17,346
Amounts reclassified from AOCI (pre-tax) |  |  | (6,961) | (5,049)
Income tax impact of amounts reclassified |  |  | 2,701 | 1,970
Other OCI changes (pre-tax) |  |  | 14,903 | (1,695)
Income tax impact of other OCI changes |  |  | (5,783) | 661
Total Other Comprehensive Income (Loss) |  |  | 4,860 | (4,113)
Ending Balance | 9,180 | 13,233 | 9,180 | 13,233
PNM | Pension Liability Adjustment |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning Balance |  |  | (96,748) | (88,822)
Amounts reclassified from AOCI (pre-tax) |  |  | 3,226 | 2,752
Income tax impact of amounts reclassified |  |  | (1,252) | (1,074)
Total Other Comprehensive Income (Loss) |  |  | 1,974 | 1,678
Ending Balance | $ (94,774) | $ (87,144) | $ (94,774) | $ (87,144)

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e681-108580 Reference 3: 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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- Definition Amount before tax and reclassification adjustments of 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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- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669625-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581 + Details
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