v3.26.1
Power Supply Agreements - Schedule of Changes in Estimated Fair Value of Derivative Asset (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Power Purchase Agreement [Line Items]    
Balance beginning $ 148,048  
Total change in fair value (51,852) $ 41,894
Balance ending 97,118  
Rockdale PPA    
Power Purchase Agreement [Line Items]    
Balance beginning 147,026 148,673
Change due to future price curve (53,117) 36,868
Change due to passage of time and settlements 3,209 3,521
Total change in fair value (49,908) 40,389
Balance ending 97,118 189,062
Corsicana PPA    
Power Purchase Agreement [Line Items]    
Balance beginning 1,022 822
Change due to future price curve (2,109) 1,460
Change due to passage of time and settlements 165 45
Total change in fair value (1,944) 1,505
Balance ending $ (922) $ 2,327