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Commitments and Contingencies (Details)
 1 Months Ended
Aug. 31, 2022
USD ($)
Jun. 30, 2023
USD ($)
entity
Dec. 31, 2022
USD ($)
Commitments and Contingencies Disclosure [Abstract]      
Retention liability     $ 1,400,000
Retention agreements amount of retention pay $ 1,000,000    
Other Commitments [Line Items]      
Restricted cash, long-term   $ 8,600,000 10,000,000
Related Party Transaction [Line Items]      
Liability or expense   $ 6,375,000 6,645,000
Tinuum Group, LLC      
Related Party Transaction [Line Items]      
Number of entities affiliated with related parties | entity   2  
Limited guarantees, percent   50.00%  
Liability or expense   $ 0  
Five Forks Mine      
Other Commitments [Line Items]      
Surety bond amount   7,500,000 7,500,000
Corbin Facilities      
Other Commitments [Line Items]      
Surety bond amount   3,000,000  
West Virginia ("Mine 4")      
Other Commitments [Line Items]      
Surety bond amount   700,000  
Restricted cash, long-term   $ 400,000  
Marshall Mine      
Other Commitments [Line Items]      
Surety bond amount     $ 16,600,000