v3.26.3
REVENUE - Coal Operations (Details) - Coal Operations - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
REVENUE        
Total Sales $ 36,128 $ 51,256 $ 111,809 $ 119,588
Third party Indiana customers        
REVENUE        
Total Sales 23,457 27,355 78,072 68,960
Third party other customers        
REVENUE        
Total Sales $ 12,671 $ 23,901 $ 33,737 $ 50,628