Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2014

Related Party Transactions [Abstract]

Schedule of Related Party Transactions [Table Text Block]

The table below summarizes the nature and amount of related party transactions of PNMR, PNM, and TNMP:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2014		2013		2014		2013
	(In thousands)
Services billings:
PNMR to PNM	$	20,813	$	22,241	$	64,069	$	65,729
PNMR to TNMP	6,471		6,731		20,695		20,948
PNM to TNMP	142		140		402		381
TNMP to PNMR	20		2		21		6
Interest billings:
PNMR to TNMP	65		139		245		354
PNMR to PNM	1		—		55		1
PNM to PNMR	28		35		79		113
Income tax sharing payments:
PNMR to PNM	—		—		—		45,000
PNMR to TNMP	—		—		—		—