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Financing (Tables)
3 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
Schedule of Short-term Debt
Short-term debt outstanding consists of:
March 31,December 31,
Short-term Debt20222021
(In thousands)
PNM Revolving Credit Facility$4,700 $7,400 
TNMP Revolving Credit Facility75,000 400 
PNMR Revolving Credit Facility6,300 54,900 
$86,000 $62,700