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Consolidated Balance Sheets - TNMP - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Current Assets:    
Cash and cash equivalents $ 4,498 $ 2,215
Accounts receivable 130,351 126,291
Unbilled revenues 69,176 64,072
Other receivables 37,236 76,509
Materials, supplies, and fuel stock 166,861 98,034
Regulatory assets 41,492 73,046
Other current assets 16,086 8,920
Total current assets 498,836 475,543
Other Property and Investments:    
Other investments 259 171
Non-utility property, including financing leases 28,832 29,367
Total other property and investments 504,615 593,516
Utility Plant:    
Plant in service, held for future use, and to be abandoned 10,697,774 9,701,180
Less accumulated depreciation and amortization 2,829,296 2,755,823
Net plant in service and plant held for future use 7,868,478 6,945,357
Construction work in progress 495,976 589,834
Net utility plant 8,437,008 7,609,862
Deferred Charges and Other Assets:    
Regulatory assets 962,003 914,381
Goodwill 278,297 278,297
Operating lease assets, net of amortization 272,894 182,201
Other deferred charges 258,080 198,805
Total deferred charges and other assets 1,771,274 1,573,684
Total assets 11,211,733 10,252,605
Current Liabilities:    
Short-term debt 609,300 261,900
Current installments of long-term debt 611,603 280,169
Accounts payable 204,468 205,175
Accrued interest and taxes 104,756 98,655
Regulatory liabilities 34,173 140,005
Operating lease liabilities 14,293 12,267
Other current liabilities 84,998 94,397
Total current liabilities 1,775,098 1,230,760
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs (includes $331,726 and $338,521 related to ETBC I) 4,311,765 4,241,642
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 899,392 845,280
Regulatory liabilities 748,738 771,317
Asset retirement obligations 244,618 245,531
Accrued pension liability and postretirement benefit cost 23,065 21,429
Operating lease liabilities 255,376 167,000
Other deferred credits 358,867 319,066
Total deferred credits and other liabilities 2,530,056 2,369,623
Total liabilities 8,616,919 7,842,025
Commitments and Contingencies (See Note 16)
Company Common Stockholders' Equity    
Common stock ($10 par value; 12,000,000 shares authorized; issued and outstanding 6,358 shares) 1,724,444 1,624,823
Retained earnings 887,649 787,110
Total TXNM common stockholders’ equity 2,536,385 2,349,093
Total liabilities and stockholders' equity 11,211,733 10,252,605
TNMP    
Current Assets:    
Cash and cash equivalents 233 0
Accounts receivable 34,419 31,412
Unbilled revenues 16,193 17,147
Other receivables 15,144 26,983
Materials, supplies, and fuel stock 24,351 16,462
Regulatory assets 5,268 50
Other current assets 4,908 2,705
Total current assets 100,516 94,759
Other Property and Investments:    
Other investments 75 102
Non-utility property, including financing leases 13,137 14,746
Total other property and investments 13,212 14,848
Utility Plant:    
Plant in service, held for future use, and to be abandoned 3,635,550 3,210,870
Less accumulated depreciation and amortization 616,741 582,140
Net plant in service and plant held for future use 3,018,809 2,628,730
Construction work in progress 165,527 91,274
Net utility plant 3,184,336 2,720,004
Deferred Charges and Other Assets:    
Regulatory assets 104,693 75,654
Goodwill 226,665 226,665
Operating lease assets, net of amortization 923 1,814
Other deferred charges 18,780 11,287
Total deferred charges and other assets 351,061 315,420
Total assets 3,649,125 3,145,031
Current Liabilities:    
Short-term debt 151,600 55,100
Current installments of long-term debt 0 79,947
Accrued interest and taxes 56,740 57,558
Regulatory liabilities 602 5,159
Operating lease liabilities 713 895
Other current liabilities 6,964 12,084
Total current liabilities 291,074 269,295
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs (includes $331,726 and $338,521 related to ETBC I) 1,464,079 1,180,933
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 208,107 178,748
Regulatory liabilities 230,037 206,296
Asset retirement obligations 955 898
Accrued pension liability and postretirement benefit cost 998 1,480
Operating lease liabilities 167 809
Other deferred credits 88,519 68,911
Total deferred credits and other liabilities 528,783 457,142
Total liabilities 2,283,936 1,907,370
Commitments and Contingencies (See Note 16)
Company Common Stockholders' Equity    
Common stock ($10 par value; 12,000,000 shares authorized; issued and outstanding 6,358 shares) 64 64
Paid-in-capital 870,066 846,066
Retained earnings 495,059 391,531
Total TXNM common stockholders’ equity 1,365,189 1,237,661
Total liabilities and stockholders' equity 3,649,125 3,145,031
TNMP | Nonrelated Party    
Current Liabilities:    
Accounts payable 67,116 51,620
TNMP | Related Party    
Current Liabilities:    
Accounts payable $ 7,339 $ 6,932