Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2020

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Information regarding accumulated other comprehensive income (loss) for the six months ended June 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)	(3,059)		4,150		1,091		(500)		591
Income tax impact of amounts reclassified	777		(1,054)		(277)		127		(150)
Other OCI changes (pre-tax)	9,717		—		9,717		(1,198)		8,519
Income tax impact of other OCI changes	(2,468)		—		(2,468)		304		(2,164)
Net after-tax change	4,967		3,096		8,063		(1,267)		6,796
Balance at June 30, 2020	$	15,605	$	(106,597)	$	(90,992)	$	(1,589)	$	(92,581)

Balance at December 31, 2018	$	1,939	$	(112,361)	$	(110,422)	$	1,738	$	(108,684)
Amounts reclassified from AOCI (pre-tax)	(5,601)		3,702		(1,899)		525		(1,374)
Income tax impact of amounts reclassified	1,423		(940)		483		(133)		350
Other OCI changes (pre-tax)	15,938		—		15,938		(3,169)		12,769
Income tax impact of other OCI changes	(4,048)		—		(4,048)		805		(3,243)
Net after-tax change	7,712		2,762		10,474		(1,972)		8,502
Balance at June 30, 2019	$	9,651	$	(109,599)	$	(99,948)	$	(234)	$	(100,182)