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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning balance | $ 2,264,802 | $ 2,169,800 | $ 2,244,926 | $ 2,222,929
Total Other Comprehensive Income (Loss) | 5,119 | (245) | 6,813 | (4,889)
Ending balance | 2,313,596 | 2,185,687 | 2,313,596 | 2,185,687
Total |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning balance | (64,354) | (76,580) | (66,048) | (71,936)
Amounts reclassified from AOCI (pre-tax) |  |  | 1,005 | (550)
Income tax impact of amounts reclassified |  |  | (255) | 140
Other OCI changes (pre-tax) |  |  | 8,127 | (6,004)
Income tax impact of other OCI changes |  |  | (2,064) | 1,525
Total Other Comprehensive Income (Loss) | 5,119 | (245) | 6,813 | (4,889)
Ending balance | (59,235) | (76,825) | (59,235) | (76,825)
Fair Value Adjustment for Cash Flow Hedges |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning balance |  |  | 8,287 | 0
Amounts reclassified from AOCI (pre-tax) |  |  | 1,197 | (1,185)
Income tax impact of amounts reclassified |  |  | (304) | 301
Other OCI changes (pre-tax) |  |  | 3,567 | 3,448
Income tax impact of other OCI changes |  |  | (906) | (876)
Total Other Comprehensive Income (Loss) |  |  | 3,554 | 1,688
Ending balance | 11,841 | 1,688 | 11,841 | 1,688
PNM |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning balance | 2,017,995 | 2,013,794 | 1,960,324 | 2,015,264
Total Other Comprehensive Income (Loss) | (219) | (1,933) | 3,259 | (6,577)
Ending balance | 2,047,702 | 2,005,541 | 2,047,702 | 2,005,541
PNM | Total |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning balance | (70,857) | (76,580) | (74,335) | (71,936)
Amounts reclassified from AOCI (pre-tax) |  |  | (192) | 635
Income tax impact of amounts reclassified |  |  | 49 | (161)
Other OCI changes (pre-tax) |  |  | 4,560 | (9,452)
Income tax impact of other OCI changes |  |  | (1,158) | 2,401
Total Other Comprehensive Income (Loss) | (219) | (1,933) | 3,259 | (6,577)
Ending balance | (71,076) | (78,513) | (71,076) | (78,513)
PNM | Unrealized Gains on Available-for-Sale Securities |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning balance |  |  | 7,422 | 11,715
Amounts reclassified from AOCI (pre-tax) |  |  | (2,580) | (2,917)
Income tax impact of amounts reclassified |  |  | 655 | 741
Other OCI changes (pre-tax) |  |  | 4,560 | (9,452)
Income tax impact of other OCI changes |  |  | (1,158) | 2,401
Total Other Comprehensive Income (Loss) |  |  | 1,477 | (9,227)
Ending balance | 8,899 | 2,488 | 8,899 | 2,488
PNM | Pension Liability Adjustment |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Beginning balance |  |  | (81,757) | (83,651)
Amounts reclassified from AOCI (pre-tax) |  |  | 2,388 | 3,552
Income tax impact of amounts reclassified |  |  | (606) | (902)
Other OCI changes (pre-tax) |  |  | 0 | 0
Income tax impact of other OCI changes |  |  | 0 | 0
Total Other Comprehensive Income (Loss) |  |  | 1,782 | 2,650
Ending balance | $ (79,975) | $ (81,001) | $ (79,975) | $ (81,001)

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