v3.25.3
Inventories - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Schedule of Inventories [Abstract]    
Raw coal $ 24,088 $ 19,709
Saleable coal 50,230 17,969
Supplies 7,256 5,680
Total inventories $ 81,574 $ 43,358