Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2026

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Information regarding accumulated other comprehensive income (loss) for the nine months ended September 30, 2026, and 2025 is as follows:


			Accumulated Other Comprehensive Income (Loss)
			PNM																								Corporate and Other						TXNM
			Unrealized Gains on Available-for-Sale Debt Securities						Pension Liability Adjustment																		Fair Value Adjustment for Cash Flow Hedges


															Total																		Total

			(In thousands)


Balance at December 31, 2025			$	218					$	(25,921)					$	(25,703)											$	(1,113)					$	(26,816)
Amounts reclassified from AOCI (pre-tax)			(366)						1,507						1,141												141						1,282
Income tax impact of amounts reclassified			93						(383)						(290)												(36)						(326)
Other OCI changes (pre-tax)			95						—						95												—						95
Income tax impact of other OCI changes			(24)						—						(24)												—						(24)
Net after-tax change			(202)						1,124						922												105						1,027
Balance at September 30, 2026			$	16					$	(24,797)					$	(24,781)											$	(1,008)					$	(25,789)













Balance at December 31, 2024			$	214					$	(75,922)					$	(75,708)											$	—					$	(75,708)
Amounts reclassified from AOCI (pre-tax)			(611)						4,123						3,512												—						3,512
Income tax impact of amounts reclassified			155						(1,047)						(892)												—						(892)
Other OCI changes (pre-tax)			645						—						645												(1,538)						(893)
Income tax impact of other OCI changes			(164)						—						(164)												391						227
Net after-tax change			25						3,076						3,101												(1,147)						1,954
Balance at September 30, 2025			$	239					$	(72,846)					$	(72,607)											$	(1,147)					$	(73,754)