Consolidated Statements of Comprehensive Income (Loss) - PNM (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	$ (2,928)	$ 490	$ 478
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	1,828	972	2,480
Pension liability adjustment, income tax expense (benefit)	(353)	1,159	(3,076)
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, income tax expense	(1,212)	(1,804)	(2,120)
PNM
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	(2,928)	490	478
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	1,828	972	2,480
Pension liability adjustment, income tax expense (benefit)	(353)	1,159	(3,076)
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, income tax expense	$ (1,212)	$ (1,804)	$ (2,120)