Consolidated Statements of Comprehensive Income (Loss) - PNM (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	$ 478	$ (5,736)	$ (6,534)
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	2,480	2,412	3,572
Pension liability adjustment, income tax expense (benefit)	(3,076)	(1,562)	973
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, income tax expense	(2,120)	(2,108)	(1,880)
Public Service Company of New Mexico
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	478	(5,736)	(6,534)
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	2,480	2,412	3,572
Pension liability adjustment, income tax expense (benefit)	(3,076)	(1,562)	973
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, income tax expense	$ (2,120)	$ (2,108)	$ (1,880)