Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	$ (3,030)	$ (2,130)
Reclassification adjustment for (gains) included in net earnings, income tax expense	1,078	4,374
Pension liability adjustment, income tax expense (benefit)	(631)	(537)
Change in fair market value, income tax (expense) benefit	72	503
Reclassification adjustment for (gains) losses included in net earnings (loss), income tax expense (benefit)	(44)	(57)
Public Service Company of New Mexico
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	(3,030)	(2,130)
Reclassification adjustment for (gains) included in net earnings, income tax expense	1,078	4,374
Pension liability adjustment, income tax expense (benefit)	$ (631)	$ (537)