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Revenue
 3 Months Ended
Mar. 31, 2025
Revenue from Contract with Customer [Abstract]  
Revenue Revenue
Disaggregation of Revenue from Contracts with Customers

The Company earns revenues primarily through the sale of coal produced by Company operations and coal purchased from third parties. The Company extracts, processes and markets met and thermal coal from deep and surface mines for sale to steel and coke producers, industrial customers, and electric utilities.

The Company has disaggregated revenue between met coal and thermal coal and export and domestic revenues which depicts the pricing and contract differences between the two. Export revenue generally is derived by spot or short-term contracts with pricing determined at the time of shipment or based on a market index, whereas domestic revenue is characterized by contracts that typically have a term of one year or longer and with fixed pricing terms. 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,
20252024
Export met coal revenues$376,740 $672,739 
Export thermal coal revenues18,975 28,562 
Total export coal revenues$395,715 $701,301 
Domestic met coal revenues$128,662 $153,295 
Domestic thermal coal revenues5,290 6,687 
Total domestic coal revenues$133,952 $159,982 
Total met coal revenues$505,402 $826,034 
Total thermal coal revenues24,265 35,249 
Total coal revenues$529,667 $861,283 
Performance Obligations

The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied as of March 31, 2025:
Remainder of 20252026202720282029Total
Estimated coal revenues (1)
$8,635 $12,000 $— $— $— $20,635 
(1) Amounts only include estimated coal revenues associated with customer contracts with fixed pricing and original expected duration of more than one year. Refer to Note 3 in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024.