Segment Information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule of Operating Segment Results

	PRB		MET		Other Thermal		Corporate, Other and Eliminations			Consolidated
	(in thousands)
Three Months Ended March 31, 2019
Revenues	$	212,729	$	253,262	$	85,978	$	3,214		$	555,183
Adjusted EBITDA	20,583		91,534		6,119		(10,982		)	107,254
Depreciation, depletion and amortization	4,865		16,382		3,435		591			25,273
Accretion on asset retirement obligation	3,135		531		603		868			5,137
Total assets	230,329		568,367		139,306		925,199			1,863,201
Capital expenditures	414		31,224		6,250		1,259			39,147
Three Months Ended March 31, 2018
Revenues	$	245,428	$	238,347	$	91,520	$	—		$	575,295
Adjusted EBITDA	27,502		83,742		15,669		(22,000		)	104,913
Depreciation, depletion and amortization	8,423		16,986		3,835		459			29,703
Accretion on asset retirement obligation	4,885		469		565		1,073			6,992
Total assets	383,823		548,804		130,132		913,919			1,976,678
Capital expenditures	698		5,829		1,206		1,720			9,453

Reconciliation Statement of Segment Income from Operations to Consolidated Income Before Income Taxes

A reconciliation of net income to adjusted EBITDA follows:

	Three Months Ended March 31,
	2019			2018
	(In thousands)
Net income	$	72,741		$	59,985
Provision for (benefit from) income taxes	70			(544		)
Interest expense, net	2,289			4,122
Depreciation, depletion and amortization	25,273			29,703
Accretion on asset retirement obligations	5,137			6,992
Amortization of sales contracts, net	65			3,051
Non-service related pension and postretirement benefit costs	1,766			1,303
Reorganization items, net	(87		)	301
Adjusted EBITDA	$	107,254		$	104,913