Pension and Other Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2015

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 March 31,
	Pension Plan						OPEB Plan						Executive Retirement Program
	2015			2014			2015			2014			2015		2014
	(In thousands)
Components of Net Periodic
Benefit Cost
Service cost	$	—		$	—		$	51		$	45		$	—	$	—
Interest cost	7,064			7,541			1,022			1,159			190		205
Expected return on plan assets	(9,831		)	(9,511		)	(1,403		)	(1,410		)	—		—
Amortization of net (gain) loss	3,705			3,255			491			556			81		52
Amortization of prior service cost	(241		)	(241		)	(160		)	(336		)	—		—
Net periodic benefit cost	$	697		$	1,044		$	1		$	14		$	271	$	257

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 March 31,
	Pension Plan						OPEB Plan						Executive Retirement Program
	2015			2014			2015			2014			2015		2014
	(In thousands)
Components of Net Periodic
Benefit Cost (Income)
Service cost	$	—		$	—		$	62		$	59		$	—	$	—
Interest cost	761			798			152			155			9		10
Expected return on plan assets	(1,105		)	(1,132		)	(130		)	(133		)	—		—
Amortization of net (gain) loss	195			166			—			(31		)	1		—
Amortization of prior service cost	—			—			—			8			—		—
Net Periodic Benefit Cost (Income)	$	(149	)	$	(168	)	$	84		$	58		$	10	$	10