Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

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, 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			48,727			10,055		1,731			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
Three Months Ended March 31, 2014
Revenues	$	358,607		$	279,137		$	98,227	$	—		$	735,971
Adjusted EBITDA	29,819			28,427			4,132		(34,773		)	27,605
Depreciation, depletion and amortization	39,245			54,988			9,519		671			104,423
Amortization of acquired sales contracts, net	(789		)	(2,974		)	67		—			(3,696		)
Capital expenditures	2,094			8,156			1,801		2,403			14,454

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,
	2015			2014
	(In thousands)
Adjusted EBITDA	$	81,772		$	27,605
Depreciation, depletion and amortization	(104,874		)	(104,423		)
Amortization of acquired sales contracts, net	3,390			3,696
Interest expense, net	(96,879		)	(94,628		)
Loss before income taxes	$	(116,591	)	$	(167,750	)