v3.26.1
COMMITMENTS AND CONTINGENCIES (Details)
1 Months Ended 3 Months Ended
Jul. 20, 2023
USD ($)
Mar. 04, 2022
USD ($)
Jul. 16, 2021
USD ($)
Jul. 15, 2021
USD ($)
Nov. 05, 2018
item
Feb. 29, 2024
USD ($)
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
COMMITMENTS AND CONTINGENCIES                
Royalty expense             $ 5,100,000 $ 5,700,000
Accrued amount             0  
Payments to acquire property, plant, and equipment           $ 3,000,000    
Number of raw coal storage silos, failure | item         1      
Number of raw coal storage silos | item         3      
Percentage of structural failure         80.00%      
Compensatory damages $ 7,700,000 $ 1,800,000 $ 25,000,000 $ 7,700,000        
Award to cover inconvenience and aggravation $ 25,000,000              
Total loss recovery asset             4,700,000  
Maximum                
COMMITMENTS AND CONTINGENCIES                
Additional loss recovery asset             100,000  
Corresponding reduction             100,000  
Surety Bond                
COMMITMENTS AND CONTINGENCIES                
Asset retirement obligation             38,200,000  
Take-or-pay Purchase Commitments                
COMMITMENTS AND CONTINGENCIES                
Total commitment             21,800,000  
Commitment             14,700,000  
Environmental Restoration Costs                
COMMITMENTS AND CONTINGENCIES                
Regulatory liability             0  
Environmental Issue                
COMMITMENTS AND CONTINGENCIES                
Environmental liabilities             $ 0