Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2013

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,
	2013		2012		2013	2012
	(In thousands)
Services billings:
PNMR to PNM	$	22,241	$	22,143	65,729	68,030
PNMR to TNMP	6,731		6,439		20,948	20,206
PNM to TNMP	140		184		381	473
TNMP to PNMR	2		4		6	12
Interest billings:
PNMR to TNMP	139		22		354	72
PNMR to PNM	—		—		1	1
PNM to PNMR	35		45		113	134
Income tax sharing payments:
PNMR to PNM	—		—		45,000	63,114
PNMR to TNMP	—		—		—	1,952