Segment Information (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Schedule of Operating Segment Results

The Corporate, Other and Eliminations grouping includes these charges, as well as the change in fair value of coal derivatives and coal trading activities, net; corporate overhead; land management activities; other support functions; and the elimination of intercompany transactions.

	PRB		MET			Other Thermal			Corporate, Other and Eliminations			Consolidated
Successor Periods	(in thousands)
Three Months Ended June 30, 2017
Revenues	$	230,579	$	227,649		$	91,639		$	(1	)	$	549,866
Adjusted EBITDAR	31,789		62,552			26,910			(25,883		)	95,368
Depreciation, depletion and amortization	8,574		18,385			3,285			457			30,701
Accretion on asset retirement obligation	5,040		528			540			1,515			7,623
Capital expenditures	822		6,825			1,899			1,426			10,972
Six Months Ended June 30, 2017
Revenues	$	504,007	$	453,232		$	193,545		$	57		$	1,150,841
Adjusted EBITDAR	79,794		130,862			54,152			(48,942		)	215,866
Depreciation, depletion and amortization	18,085		37,149			6,485			903			62,622
Accretion on asset retirement obligation	10,080		1,057			1,080			3,029			15,246
Capital expenditures	950		11,436			2,640			1,896			16,922
Predecessor Periods
Three Months Ended June 30, 2016
Revenues	$	207,735	$	147,499		$	60,032		$	5,032		$	420,298
Adjusted EBITDAR	21,578		(3,593		)	(408		)	(17,887		)	(310		)
Depreciation, depletion and amortization	30,145		17,330			9,907			1,077			58,459
Accretion on asset retirement obligation	5,647		588			663			1,152			8,050
Capital expenditures	489		6,726			949			60,047			68,211
Six Months Ended June 30, 2016
Revenues	$	430,857	$	284,083		$	116,164		$	17,300		$	848,404
Adjusted EBITDAR	34,306		2,759			2,743			(41,838		)	(2,030		)
Depreciation, depletion and amortization	62,905		36,675			19,798			2,780			122,158
Accretion on asset retirement obligation	11,293		1,177			1,325			2,561			16,356
Capital expenditures	499		10,330			2,895			60,413			74,137

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

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

	Successor			Predecessor			Successor			Predecessor
	Three Months Ended June 30,			Three Months Ended June 30,			Six Months Ended June 30,			Six Months Ended June 30,
	2017			2016			2017			2016
(In thousands)
Adjusted EBITDAR	$	95,368		$	(310	)	$	215,866		$	(2,030	)
Depreciation, depletion and amortization	30,701			58,459			62,622			122,158
Accretion on asset retirement obligations	7,623			8,050			15,246			16,356
Amortization of sales contracts, net	14,352			1			29,042			(832		)
Asset impairment and mine closure costs	—			43,701			—			129,221
Interest expense, net	(5,161		)	(44,340		)	(14,059		)	(87,653		)
Net loss resulting from early retirement of debt and debt restructuring	(31		)	—			(2,061		)	(2,213		)
Reorganization items, net	(21		)	(21,271		)	(2,849		)	(25,146		)
Income (loss) before income taxes	$	37,479		$	(176,132	)	$	89,987		$	(383,945	)