Segment Information (Tables)

3 Months Ended

Mar. 31, 2025

Segment Reporting [Abstract]

Schedule of Segment Reporting Information by Segment

Reportable segment results for the three months ended March 31, 2025 were:

	High CV Thermal		Metallurgical		PRB		Baltimore Marine Terminal		Other, Corporate and Eliminations		Consolidated
Total Revenue from Contracts with Customers	$	542,086	$	304,580	$	162,589	$	21,226	$	(13,075)	$	1,017,406
Cash Costs of Revenue	303,561		210,775		133,158		7,825		2,827
Transportation Expense	93,729		76,982		2,740		—		(16,270)
Other Segment Items(1)	—		36,406		—		—		42,188
Adjusted EBITDA	$	144,796	$	(19,583)	$	26,691	$	13,401	$	(41,820)	$	123,485
Segment Assets	$	2,252,607	$	1,766,112	$	304,455	$	87,496	$	1,841,276	$	6,251,946
Capital Expenditures	$	33,995	$	23,964	$	2,496	$	1,242	$	3,125	$	64,822

Reportable segment results for the three months ended March 31, 2024 were:

	High CV Thermal		Metallurgical		PRB		Baltimore Marine Terminal		Other, Corporate and Eliminations		Consolidated
Total Revenue from Contracts with Customers	$	496,729	$	35,096	$	—	$	24,528	$	(9,664)	$	546,689
Cash Costs of Revenue	242,436		34,626		—		7,169		2,194
Transportation Expense	80,542		3,356		—		—		(14,056)
Other Segment Items(1)	(2,250)		—		—		—		10,919
Adjusted EBITDA	$	176,001	$	(2,886)	$	—	$	17,359	$	(8,721)	$	181,753
Segment Assets	$	1,612,850	$	128,286	$	—	$	82,818	$	856,170	$	2,680,124
Capital Expenditures	$	36,958	$	3,093	$	—	$	1,063	$	1,238	$	42,352

(1) Other segment items include other non-operating income, general and administrative costs, and other non-operating expenses that are not part of each segment's ongoing operations.

Schedule of Revenue by Major Customers by Reporting Segments

For the three months ended March 31, 2025 and 2024, the Company's reportable segments had revenues from the following customers, each comprising over 10% of the Company's total sales:

	Three Months Ended March 31,
	2025	2024
Customer A	*	$	74,260
Customer B	*	$	64,479

* Revenues from these customers during the periods presented were less than 10% of the Company's total sales.

Schedule of Adjusted EBITDA

Reconciliation of Segment Information to Consolidated Amounts:

	Three Months Ended March 31, 2025
	High CV Thermal		Metallurgical		PRB		Baltimore Marine Terminal		Other, Corporate and Eliminations		Consolidated
Earnings (Loss) Before Income Tax	$	93,506	$	(65,472)	$	15,911	$	12,022	$	(129,460)	$	(73,493)
Interest Expense, net	—		—		—		—		1,701		1,701
Depreciation, Depletion and Amortization	51,290		45,889		10,780		1,379		12,218		121,556
Stock-Based Compensation	—		—		—		—		12,859		12,859
Merger-Related Expenses	—		—		—		—		49,182		49,182
Loss on Debt Extinguishment	—		—		—		—		11,680		11,680
Adjusted EBITDA	$	144,796	$	(19,583)	$	26,691	$	13,401	$	(41,820)	$	123,485

	Three Months Ended March 31, 2024
	High CV Thermal		Metallurgical		PRB		Baltimore Marine Terminal		Other, Corporate and Eliminations		Consolidated
Earnings (Loss) Before Income Tax	$	130,517	$	(4,938)	$	—	$	16,267	$	(23,112)	$	118,734
Interest Expense, net	—		—		—		—		904		904
Depreciation, Depletion and Amortization	45,484		2,052		—		1,092		8,369		56,997
Stock-Based Compensation	—		—		—		—		5,118		5,118
Adjusted EBITDA	$	176,001	$	(2,886)	$	—	$	17,359	$	(8,721)	$	181,753