Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net Earnings	$ 10,626	$ 17,080
Net Earnings	13,962	20,477
Unrealized Gain on Investment Securities:
Unrealized holding gains arising during the period, net of income tax (expense) benefit	4,747	11,314
Reclassification adjustment for (gains) included in net earnings, net of income tax expense	(807)	(5,411)
Pension Liability Adjustment:
Reclassification adjustment for amortization of experience (gain) loss recognized as net periodic benefit cost, net of income tax expense (benefit)	960	727
Fair Value Adjustment for Cash Flow Hedges:
Change in fair market value, net of income tax (expense) benefit	8	(106)
Reclassification adjustment for (gains) losses included in net earnings, net of income tax expense (benefit)	31	27
Total Other Comprehensive Income (Loss)	4,939	6,551
Comprehensive Income	18,901	27,028
Comprehensive (Income) Attributable to Valencia Non-controlling Interest	(3,204)	(3,265)
Preferred Stock Dividend Requirements of Subsidiary	(132)	(132)
Comprehensive Income Attributable to PNMR	15,565	23,631
Public Service Company of New Mexico [Member]
Net Earnings	11,569	17,812
Net Earnings	14,773	21,077
Unrealized Gain on Investment Securities:
Unrealized holding gains arising during the period, net of income tax (expense) benefit	4,747	11,314
Reclassification adjustment for (gains) included in net earnings, net of income tax expense	(807)	(5,411)
Pension Liability Adjustment:
Reclassification adjustment for amortization of experience (gain) loss recognized as net periodic benefit cost, net of income tax expense (benefit)	960	727
Fair Value Adjustment for Cash Flow Hedges:
Total Other Comprehensive Income (Loss)	4,900	6,630
Comprehensive Income	19,673	27,707
Comprehensive (Income) Attributable to Valencia Non-controlling Interest	(3,204)	(3,265)
Comprehensive Income Attributable to PNMR	16,469	24,442
Texas-New Mexico Power Company [Member]
Net Earnings	3,726	3,011
Fair Value Adjustment for Cash Flow Hedges:
Change in fair market value, net of income tax (expense) benefit	8	(106)
Reclassification adjustment for (gains) losses included in net earnings, net of income tax expense (benefit)	31	27
Total Other Comprehensive Income (Loss)	39	(79)
Comprehensive Income Attributable to PNMR	$ 3,765	$ 2,932