Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2015

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

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

	Year Ended December 31,
	2015		2014		2013
			(In thousands)
Services billings:
PNMR to PNM	$	90,827	$	86,871	$	92,597
PNMR to TNMP	28,109		28,349		28,937
PNM to TNMP	554		524		562
TNMP to PNMR	41		31		7
Income tax sharing payments:
PNMR to TNMP	—		—		—
PNMR to PNM	1,450		—		77,433
TNMP to PNMR	—		—		3,643
Interest payments:
PNM to PNMR	54		65		4
TNMP to PNMR	276		309		481