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Equity Method Investment (Tables)
12 Months Ended
Dec. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Net Earnings and Financial Information
TXNM presented its share of net earnings from NMRD in other income on the Consolidated Statements of Earnings. Summarized financial information for NMRD is as follows:
December 31,
202420232022
(In thousands)
Operating revenues
$3,204 $13,629 $12,505 
Operating expenses3,378 8,228 9,591 
Net earnings
$(174)$5,401 $2,914 
Financial Position

December 31,
20242023
(In thousands)
Current assets$— $2,589 
Net property, plant, and equipment— 235,791 
Non-current assets— 1,849 
Total assets
— 240,229 
Current liabilities— 730 
Non-current liabilities— 358 
Owners’ equity
$— $239,141