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Fair Value of Derivative and Other Financial Instruments - Overview and Commodity Derivatives (Details) - PNM - Designated as Hedging Instrument - Commodity derivatives - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Other current assets | $ 416 | $ 9,780
Other deferred charges | 0 | 0
Derivative asset | 416 | 9,780
Other current liabilities | (27,074) | (19,209)
Other deferred credits | 0 | 0
Derivative liability | (27,074) | (19,209)
Net | $ (26,658) | $ (9,429)

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