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Revenue (Tables)
 3 Months Ended
Mar. 31, 2024
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue The following tables disaggregate the Company’s coal revenues by product category and by market to depict how the nature, amount, timing, and uncertainty of the Company’s coal revenues and cash flows are affected by economic factors:
Three Months Ended March 31,
20242023
Export met coal revenues$672,739 $647,932 
Export thermal coal revenues28,562 30,199 
Total export coal revenues$701,301 $678,131 
Domestic met coal revenues$153,295 $210,047 
Domestic thermal coal revenues6,687 18,520 
Total domestic coal revenues$159,982 $228,567 
Total met coal revenues$826,034 $857,979 
Total thermal coal revenues35,249 48,719 
Total coal revenues$861,283 $906,698 
Schedule of Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied as of March 31, 2024:
Remainder of 20242025202620272028Total
Estimated coal revenues$85,016 $— $— $— $— $85,016