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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Earnings Per Share [Abstract] |  |
Net Earnings Attributable to PNMR | $ 47,190 | $ 55,014
Average Number of Common Shares: |  |
Outstanding during period (in shares) | 90,200 | 85,835
Vested awards of restricted stock (in shares) | 283 | 266
Average Shares – Basic (in shares) | 90,483 | 86,101
Dilutive Effect of Common Stock Equivalents: |  |
Restricted stock (in shares) | 31 | 37
PNMR 2020 Forward Equity Sale Agreements (in shares) | 0 | 3
Average Shares – Diluted (in shares) | 90,514 | 86,141
Net Earnings Per Share of Common Stock: |  |
Basic (in dollars per share) | $ 0.52 | $ 0.64
Diluted (in dollars per share) | $ 0.52 | $ 0.64

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