Segment Information (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Schedule of Operating Segment Results

	PRB			APP			Other Operating Segments			Corporate, Other and Eliminations			Consolidated
	(in thousands)
Three Months Ended March 31, 2016
Revenues	$	223,122		$	173,618		$	31,366		$	—		$	428,106
Adjusted EBITDA	7,010			7,607			(3,328		)	(21,315		)	(10,026		)
Depreciation, depletion and amortization	32,760			22,329			7,932			678			63,699
Amortization of acquired sales contracts, net	(46		)	(787		)	—			—			(833		)
Capital expenditures	10			3,630			1,961			325			5,926
Three Months Ended March 31, 2015
Revenues	$	391,206		$	223,439		$	62,360		$	—		$	677,005
Adjusted EBITDA	72,062			39,807			1,691			(31,788		)	81,772
Depreciation, depletion and amortization	44,361			50,832			10,055			(374		)	104,874
Amortization of acquired sales contracts, net	(1,285		)	(2,105		)	—			—			(3,390		)
Capital expenditures	16,969			3,385			2,642			(116		)	22,880

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

A reconciliation of adjusted EBITDA to consolidated loss before income taxes follows:

	Three Months Ended March 31,
	2016			2015
	(In thousands)
Adjusted EBITDA	$	(10,026	)	$	81,772
Depreciation, depletion and amortization	(63,699		)	(104,874		)
Amortization of acquired sales contracts, net	833			3,390
Asset impairment and mine closure costs	(85,520		)	—
Interest expense, net	(43,313		)	(96,879		)
Nonoperating expenses	(6,088		)	—
Loss before income taxes	$	(207,813	)	$	(116,591	)