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Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Information regarding accumulated other comprehensive income (loss) for the three months ended March 31, 2021 and 2020 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, 2020						$	20,403					$	(98,914)					$	(78,511)											$	(672)					$	(79,183)
Amounts reclassified from AOCI (pre-tax)						(3,618)						2,087						(1,531)												(624)						(2,155)
Income tax impact of amounts reclassified			919						(530)						389												158						547
Other OCI changes (pre-tax)			(3,326)						—						(3,326)												1,247						(2,079)
Income tax impact of other OCI changes			845						—						845												(317)						528
Net after-tax change			(5,180)						1,557						(3,623)												464						(3,159)
Balance at March 31, 2021			$	15,223					$	(97,357)					$	(82,134)											$	(208)					$	(82,342)

Balance at December 31, 2019			$	10,638					$	(109,693)					$	(99,055)											$	(322)					$	(99,377)
Amounts reclassified from AOCI (pre-tax)			(1,185)						2,075						890												(38)						852
Income tax impact of amounts reclassified			301						(527)						(226)												10						(216)
Other OCI changes (pre-tax)			(4,283)						—						(4,283)												(1,998)						(6,281)
Income tax impact of other OCI changes			1,088						—						1,088												507						1,595
Net after-tax change			(4,079)						1,548						(2,531)												(1,519)						(4,050)
Balance at March 31, 2020			$	6,559					$	(108,145)					$	(101,586)											$	(1,841)					$	(103,427)

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- References

No definition available.

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- Definition

Tabular disclosure of the components of accumulated other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900

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