v3.26.1
Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Income Taxes      
Federal tax rate 21.00%    
Minerals tax rate 5.00%    
Mining and income tax expense (benefit) $ 0.0 $ 0.0  
Valuation allowance     $ 3.8
Uncertain tax positions $ 0.0