Condensed Consolidated Statements of Earnings - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Electric Operating Revenues:
Contracts with customers	$ 315,698	$ 303,351
Revenues	349,645	317,878
Operating Expenses:
Administrative and general	52,336	48,283
Regulatory disallowances and restructuring costs	1,345	0
Depreciation and amortization	65,356	58,722
Transmission and distribution costs	16,678	16,955
Taxes other than income taxes	20,509	19,880
Total operating expenses	312,922	271,746
Operating income	36,723	46,132
Other Income and Deductions:
Interest income	3,619	4,124
Gains on investment securities	14,014	288
Other income	3,415	3,469
Other (deductions)	(3,252)	(1,376)
Net other income and deductions	17,796	6,505
Interest Charges	31,634	33,055
Earnings before Income Taxes	22,885	19,582
Income Taxes	1,223	783
Net Earnings	21,662	18,799
(Earnings) Attributable to Valencia Non-controlling Interest	(2,830)	(3,677)
Preferred Stock Dividend Requirements of Subsidiary	(132)	(132)
Net Earnings Available for PNM Common Stock	$ 18,700	$ 14,990
Net Earnings Attributable to PNMR per Common Share:
Basic (dollars per share)	$ 0.23	$ 0.19
Diluted (dollars per share)	0.23	0.19
Dividends Declared per Common Share (dollars per share)	$ 0.29	$ 0.265
Alternative revenue programs
Electric Operating Revenues:
Revenues	$ 636	$ 924
Other electric operating revenue
Electric Operating Revenues:
Revenues	33,311	13,603
Electricity
Electric Operating Revenues:
Revenues	349,645	317,878
Operating Expenses:
Cost of energy and energy production costs	121,626	92,556
Electricity, Generation
Operating Expenses:
Cost of energy and energy production costs	35,072	35,350
PNM
Electric Operating Revenues:
Contracts with customers	235,941	222,564
Revenues	269,318	236,232
Operating Expenses:
Administrative and general	47,402	43,726
Regulatory disallowances and restructuring costs	1,345	0
Depreciation and amortization	39,224	36,627
Transmission and distribution costs	10,633	9,827
Taxes other than income taxes	12,010	11,608
Total operating expenses	245,025	207,940
Operating income	24,293	28,292
Other Income and Deductions:
Interest income	3,656	2,487
Gains on investment securities	14,014	288
Other income	2,632	2,391
Other (deductions)	(2,288)	(1,462)
Net other income and deductions	18,014	3,704
Interest Charges	18,360	20,830
Earnings before Income Taxes	23,947	11,166
Income Taxes	1,973	(348)
Net Earnings	21,974	11,514
(Earnings) Attributable to Valencia Non-controlling Interest	(2,830)	(3,677)
Net Earnings Attributable to PNMR	19,144	7,837
Preferred Stock Dividend Requirements of Subsidiary	(132)	(132)
Net Earnings Available for PNM Common Stock	19,012	7,705
PNM | Alternative revenue programs
Electric Operating Revenues:
Revenues	66	65
PNM | Other electric operating revenue
Electric Operating Revenues:
Revenues	33,311	13,603
PNM | Electricity
Operating Expenses:
Cost of energy and energy production costs	99,339	70,802
PNM | Electricity, Generation
Operating Expenses:
Cost of energy and energy production costs	35,072	35,350
Texas-New Mexico Power Company
Electric Operating Revenues:
Contracts with customers	79,757	80,787
Revenues	80,327	81,646
Operating Expenses:
Administrative and general	11,558	10,709
Depreciation and amortization	20,214	16,387
Transmission and distribution costs	6,045	7,128
Taxes other than income taxes	7,638	7,136
Total operating expenses	67,742	63,114
Operating income	12,585	18,532
Other Income and Deductions:
Interest income	31	0
Other income	717	754
Other (deductions)	(163)	331
Net other income and deductions	585	1,085
Interest Charges	8,800	7,729
Earnings before Income Taxes	4,370	11,888
Income Taxes	272	2,475
Net Earnings Attributable to PNMR	4,098	9,413
Texas-New Mexico Power Company | Alternative revenue programs
Electric Operating Revenues:
Revenues	570	859
Texas-New Mexico Power Company | Other electric operating revenue
Electric Operating Revenues:
Revenues	0	0
Texas-New Mexico Power Company | Electricity
Operating Expenses:
Cost of energy and energy production costs	$ 22,287	$ 21,754