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Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	$ (91)	$ (2,777)	$ (374)	$ (5,783)
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	126	1,629	794	2,701
Pension liability adjustment, income tax expense (benefit)	(482)	(626)	(962)	(1,252)
Change in fair market value, income tax (expense) benefit	(143)	40	(615)	112
Reclassification adjustment for (gains) losses included in net earnings (loss), income tax expense (benefit)	(12)	(82)	1	(125)
PNM
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	(91)	(2,777)	(374)	(5,783)
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	126	1,629	794	2,701
Pension liability adjustment, income tax expense (benefit)	$ (482)	$ (626)	$ (962)	$ (1,252)

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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