XML 52 R32.htm IDEA: XBRL DOCUMENT v3.5.0.2

Pension and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2016

Public Service Company of New Mexico [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The following tables present the components of the PNM Plans’ net periodic benefit cost:

	Three Months Ended June 30,
	Pension Plan								OPEB Plan								Executive Retirement Program
	2016				2015				2016				2015				2016				2015
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—			$	—			$	35			$	51			$	—			$	—
Interest cost	7,577				7,064				1,087				1,023				203				190
Expected return on plan assets	(8,854		)		(9,831		)		(1,371		)		(1,403		)		—				—
Amortization of net (gain) loss	3,455				3,705				286				491				64				81
Amortization of prior service cost	(241		)		(241		)		(7		)		(160		)		—				—
Net periodic benefit cost	$	1,937			$	697			$	30			$	2			$	267			$	271
	Six Months Ended June 30,
	Pension Plan								OPEB Plan								Executive Retirement Program
	2016				2015				2016				2015				2016				2015
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—			$	—			$	70			$	102			$	—			$	—
Interest cost	15,154				14,127				2,173				2,045				406				380
Expected return on plan assets	(17,708		)		(19,662		)		(2,742		)		(2,805		)		—				—
Amortization of net (gain) loss	6,910				7,410				572				983				128				162
Amortization of prior service cost	(483		)		(483		)		(15		)		(321		)		—				—
Net periodic benefit cost	$	3,873			$	1,392			$	58			$	4			$	534			$	542

Texas-New Mexico Power Company [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The following tables present the components of the TNMP Plans’ net periodic benefit cost (income):

	Three Months Ended June 30,
	Pension Plan								OPEB Plan								Executive Retirement Program
	2016				2015				2016				2015				2016				2015
	(In thousands)
Components of Net Periodic Benefit Cost (Income)
Service cost	$	—			$	—			$	46			$	62			$	—			$	—
Interest cost	826				761				169				152				10				9
Expected return on plan assets	(986		)		(1,105		)		(122		)		(130		)		—				—
Amortization of net (gain) loss	175				195				(10		)		—				1				1
Amortization of prior service cost	—				—				—				—				—				—
Net Periodic Benefit Cost (Income)	$	15			$	(149	)		$	83			$	84			$	11			$	10
	Six Months Ended June 30,
	Pension Plan								OPEB Plan								Executive Retirement Program
	2016				2015				2016				2015				2016				2015
	(In thousands)
Components of Net Periodic Benefit Cost (Income)
Service cost	$	—			$	—			$	93			$	124			$	—			$	—
Interest cost	1,652				1,521				339				304				20				18
Expected return on plan assets	(1,971		)		(2,210		)		(245		)		(260		)		—				—
Amortization of net (gain) loss	350				391				(20		)		—				1				2
Amortization of prior service cost	—				—				—				—				—				—
Net Periodic Benefit Cost (Income)	$	31			$	(298	)		$	167			$	168			$	21			$	20

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

+ Details

Name:	us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=pnm_PublicServiceCompanyOfNewMexicoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=pnm_TexasNewMexicoPowerCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: