v3.25.2
Inventories, net (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Inventory Disclosure [Abstract]    
Coal $ 105,972 $ 118,504
Raw materials, parts, supplies and other, net 108,943 89,086
Total inventories, net $ 214,915 $ 207,590