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Pension and Other Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

Public Service Company of New Mexico [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

The following table presents the components of the PNM Plans’ net periodic benefit cost:

	Three Months Ended March 31,
	Pension Plan								OPEB Plan								Executive Retirement Program
	2012				2011				2012				2011				2012				2011
	(In thousands)
Components of Net Periodic
Benefit Cost
Service cost	$	—			$	—			$	54			$	65			$	—			$	—
Interest cost	8,058				8,202				1,324				1,345				219				233
Long-term return on plan assets	(10,325		)		(9,269		)		(1,225		)		(1,347		)		—				—
Amortization of net loss	2,629				2,302				972				801				21				23
Amortization of prior service cost	79				79				(336		)		(662		)		—				—
Net periodic benefit cost	$	441			$	1,314			$	789			$	202			$	240			$	256

Texas-New Mexico Power Company [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

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

	Three Months Ended March 31,
	Pension Plan								OPEB Plan								Executive Retirement Program
	2012				2011				2012				2011				2012				2011
									(In thousands)
Components of Net Periodic
Benefit Cost (Income)
Service cost	$	—			$	—			$	61			$	77			$	—			$	—
Interest cost	909				951				156				163				11				12
Long-term return on plan assets	(1,331		)		(1,368		)		(129		)		(133		)		—				—
Amortization of net (gain) loss	115				86				(52		)		(48		)		—				—
Amortization of prior service cost	—				—				14				15				—				—
Net Periodic Benefit Cost (Income)	$	(307	)		$	(331	)		$	50			$	74			$	11			$	12

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- 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

-Topic 715

-SubTopic 20

-Publisher FASB

-Number

-Article

-Subparagraph (h)

-Name Accounting Standards Codification

-Paragraph 1

-Section 50

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

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