Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 16,249	$ 3,833
Accounts receivable, net of allowance for uncollectible accounts	83,089	85,889
Unbilled revenues	45,379	57,416
Other receivables	13,954	12,165
Materials, supplies, and fuel stock	74,124	77,929
Regulatory assets	7,355	7,373
Income taxes receivable	4,856	4,933
Other current assets	42,956	44,472
Total current assets	287,962	294,010
Other Property and Investments:
Investment securities	353,268	388,832
Equity investment in NMRD	75,203	65,159
Other investments	234	356
Non-utility property, net	16,177	12,459
Total other property and investments	444,882	466,806
Utility Plant:
Plant in service, held for future use, and to be abandoned	7,957,079	7,918,601
Less accumulated depreciation and amortization	2,755,566	2,713,503
Net plant in service and plant held for future use	5,201,513	5,205,098
Construction work in progress	240,002	161,106
Nuclear fuel, net of accumulated amortization	102,768	99,805
Net utility plant	5,544,283	5,466,009
Deferred Charges and Other Assets:
Regulatory assets	590,330	556,930
Goodwill	278,297	278,297
Operating lease right-of-use assets, net of accumulated amortization	124,717	131,212
Other deferred charges	104,648	105,510
Total deferred charges and other assets	1,097,992	1,071,949
Assets	7,375,119	7,298,774
Current Liabilities:
Short-term debt	300,600	185,100
Current installments of long-term debt	539,555	490,268
Accounts payable	95,194	103,118
Customer deposits	10,470	10,585
Accrued interest and taxes	65,908	76,815
Regulatory liabilities	2,916	505
Operating lease liabilities	29,693	29,068
Dividends declared	24,625	24,625
Other current liabilities	45,959	47,397
Total current liabilities	1,114,920	967,481
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	2,468,720	2,517,449
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	630,844	626,058
Regulatory liabilities	867,803	866,243
Asset retirement obligations	184,951	181,962
Accrued pension liability and postretirement benefit cost	91,146	95,037
Operating lease liabilities	95,573	105,512
Other deferred credits	222,064	185,753
Total deferred credits and other liabilities	2,092,381	2,060,565
Total liabilities	5,676,021	5,545,495
Commitments and Contingencies (Note 11)
Cumulative Preferred Stock of Subsidiary without mandatory redemption requirements ($100 stated value; 10,000,000 shares authorized; issued and outstanding 115,293 shares)	11,529	11,529
Company common stockholders’ equity:
Common stock	1,142,879	1,150,552
Accumulated other comprehensive income (loss), net of income taxes	(103,427)	(99,377)
Retained earnings	587,770	627,523
Total stockholders' equity	1,627,222	1,678,698
Non-controlling interest in Valencia	60,347	63,052
Total equity	1,687,569	1,741,750
Total liabilities and stockholders' equity	7,375,119	7,298,774
PNM
Current Assets:
Cash and cash equivalents	3,765	1,001
Accounts receivable, net of allowance for uncollectible accounts	58,360	60,447
Unbilled revenues	35,951	46,602
Other receivables	13,001	11,039
Affiliate receivables	8,819	8,825
Materials, supplies, and fuel stock	67,886	72,225
Regulatory assets	7,331	7,373
Income taxes receivable	15,340	15,122
Other current assets	35,302	36,561
Total current assets	245,755	259,195
Other Property and Investments:
Investment securities	353,268	388,832
Other investments	56	178
Non-utility property, net	5,687	4,470
Total other property and investments	359,011	393,480
Utility Plant:
Plant in service, held for future use, and to be abandoned	5,767,449	5,753,267
Less accumulated depreciation and amortization	2,103,398	2,076,291
Net plant in service and plant held for future use	3,664,051	3,676,976
Construction work in progress	152,488	108,787
Nuclear fuel, net of accumulated amortization	102,768	99,805
Net utility plant	3,919,307	3,885,568
Deferred Charges and Other Assets:
Regulatory assets	474,152	435,467
Goodwill	51,632	51,632
Operating lease right-of-use assets, net of accumulated amortization	114,829	120,585
Other deferred charges	95,842	97,064
Total deferred charges and other assets	736,455	704,748
Assets	5,260,528	5,242,991
Current Liabilities:
Short-term debt	60,000	58,000
Current installments of long-term debt	100,308	350,268
Accounts payable	68,852	66,746
Affiliate payables	10,202	12,524
Customer deposits	10,470	10,585
Accrued interest and taxes	49,753	43,617
Regulatory liabilities	2,451	371
Operating lease liabilities	26,727	25,927
Dividends declared	40,785	132
Other current liabilities	26,776	25,066
Total current liabilities	396,324	593,236
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	1,648,093	1,397,752
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	525,590	521,990
Regulatory liabilities	679,743	683,398
Asset retirement obligations	184,052	181,081
Accrued pension liability and postretirement benefit cost	84,293	87,838
Operating lease liabilities	88,686	97,992
Other deferred credits	191,734	155,744
Total deferred credits and other liabilities	1,754,098	1,728,043
Total liabilities	3,798,515	3,719,031
Commitments and Contingencies (Note 11)
Cumulative Preferred Stock of Subsidiary without mandatory redemption requirements ($100 stated value; 10,000,000 shares authorized; issued and outstanding 115,293 shares)	11,529	11,529
Company common stockholders’ equity:
Common stock	1,264,918	1,264,918
Accumulated other comprehensive income (loss), net of income taxes	(101,586)	(99,055)
Retained earnings	226,805	283,516
Total stockholders' equity	1,390,137	1,449,379
Non-controlling interest in Valencia	60,347	63,052
Total equity	1,450,484	1,512,431
Total liabilities and stockholders' equity	5,260,528	5,242,991
Texas-New Mexico Power Company
Current Assets:
Cash and cash equivalents	10,735	1,000
Accounts receivable, net of allowance for uncollectible accounts	24,729	25,442
Unbilled revenues	9,428	10,814
Other receivables	2,553	2,713
Affiliate receivables	846	0
Materials, supplies, and fuel stock	6,238	5,704
Regulatory assets	24	0
Other current assets	564	1,280
Total current assets	55,117	46,953
Other Property and Investments:
Other investments	178	178
Non-utility property, net	9,196	6,684
Total other property and investments	9,374	6,862
Utility Plant:
Plant in service, held for future use, and to be abandoned	1,939,935	1,919,256
Less accumulated depreciation and amortization	526,060	516,795
Net plant in service and plant held for future use	1,413,875	1,402,461
Construction work in progress	78,390	42,554
Net utility plant	1,492,265	1,445,015
Deferred Charges and Other Assets:
Regulatory assets	116,178	121,463
Goodwill	226,665	226,665
Operating lease right-of-use assets, net of accumulated amortization	9,271	9,954
Other deferred charges	4,400	3,527
Total deferred charges and other assets	356,514	361,609
Assets	1,913,270	1,860,439
Current Liabilities:
Short-term debt	70,000	15,000
Accounts payable	15,931	20,598
Affiliate payables	3,013	5,419
Accrued interest and taxes	30,692	42,068
Regulatory liabilities	465	134
Operating lease liabilities	2,624	2,753
Dividends declared	11,347	0
Other current liabilities	6,903	3,565
Total current liabilities	140,975	89,537
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	670,626	670,691
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	139,449	140,151
Regulatory liabilities	188,060	182,845
Asset retirement obligations	899	881
Accrued pension liability and postretirement benefit cost	6,853	7,199
Operating lease liabilities	6,459	7,039
Other deferred credits	9,577	7,469
Total deferred credits and other liabilities	351,297	345,584
Total liabilities	1,162,898	1,105,812
Commitments and Contingencies (Note 11)
Company common stockholders’ equity:
Common stock	64	64
Paid-in-capital	614,166	614,166
Retained earnings	136,142	140,397
Total stockholders' equity	750,372	754,627
Total liabilities and stockholders' equity	$ 1,913,270	$ 1,860,439