Equity Method Investment - Narrative (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 28, 2021 USD ($)	Dec. 31, 2021 USD ($) MW	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business Acquisition [Line Items]
Distributions from NMRD | $		$ 572	$ 0	$ 0
PNMR Development | NMRD
Business Acquisition [Line Items]
Distributions from NMRD | $	$ 3,000
Equity in earnings | $		2,400
Dividend in excess of equity earnings | $		$ 600
NMRD
Business Acquisition [Line Items]
Renewable energy capacity in operating (in mw) | MW		135.1
Megawatts supplying energy to data center (in mw) | MW		130
Megawatts supplying energy to cooperative (in mw) | MW		1.9
Megawatts supplying energy to power city (in mw) | MW		1.2
NMRD | PNMR Development
Business Acquisition [Line Items]
Ownership percentage		50.00%
Contribution to construction activities | $		$ 0	$ 23,300	$ 38,300
NMRD | Central New Mexico Electric Cooperative
Business Acquisition [Line Items]
Megawatts supplying energy to cooperative (in mw) | MW		2.0