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Power Supply Agreements - Schedule of Changes in Estimated Fair Value of Derivative Asset (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Power Supply Agreements        
Balance as of December 31, 2024     $ 149,495  
Change due to future price curve $ (39,300)   (3,245)  
Change due to passage of time and settlements (3,400)   2,392  
Total change in fair value of derivative assets (42,747) $ 27,484 (853) $ 47,716
Balance as of June 30, 2025 $ 148,642   $ 148,642