Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2020

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Information regarding accumulated other comprehensive income (loss) for the nine months ended September 30, 2020 and 2019 is as follows:

	Accumulated Other Comprehensive Income (Loss)
	PNM						Corporate and Other		PNMR Consolidated
	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, 2019	$	10,638	$	(109,693)	$	(99,055)	$	(322)	$	(99,377)
Amounts reclassified from AOCI (pre-tax)	(7,156)		6,225		(931)		(1,117)		(2,048)
Income tax impact of amounts reclassified	1,818		(1,581)		237		284		521
Other OCI changes (pre-tax)	14,750		—		14,750		33		14,783
Income tax impact of other OCI changes	(3,746)		—		(3,746)		(9)		(3,755)
Net after-tax change	5,666		4,644		10,310		(809)		9,501
Balance at September 30, 2020	$	16,304	$	(105,049)	$	(88,745)	$	(1,131)	$	(89,876)

Balance at December 31, 2018	$	1,939	$	(112,361)	$	(110,422)	$	1,738	$	(108,684)
Amounts reclassified from AOCI (pre-tax)	(12,563)		5,553		(7,010)		707		(6,303)
Income tax impact of amounts reclassified	3,191		(1,410)		1,781		(179)		1,602
Other OCI changes (pre-tax)	23,106		—		23,106		(3,664)		19,442
Income tax impact of other OCI changes	(5,869)		—		(5,869)		931		(4,938)
Net after-tax change	7,865		4,143		12,008		(2,205)		9,803
Balance at September 30, 2019	$	9,804	$	(108,218)	$	(98,414)	$	(467)	$	(98,881)