Quarterly report pursuant to Section 13 or 15(d)

CONTINGENCIES (Details)

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CONTINGENCIES (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 31, 2021
USD ($)
item
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Jul. 25, 2017
USD ($)
Dec. 31, 2010
USD ($)
Additional Royalty Due To Disallowed Deductions           $ 4,700,000
Bonds Posted To Appeal IBLA Decision         $ 7,200,000  
Collateral For Bonds Posted Related To Appeal With IBLA   $ 8,900,000     $ 6,900,000  
Decommissioning obligations   1,200,000        
Loss of decommissioning obligations   $ 19,200,000        
Loss contingency in period     $ 20,400,000      
Other Nonoperating Income (Expense) [Member]            
Loss contingency in period     $ 15,900,000 $ 4,500,000    
BSEE [Member]            
Loss Contingency Number Of Claims Filed | item 9          
Proposed Civil Penalties $ 7,700,000          
Settlement Agreement Annual Instalments Value $ 720,000