BUSINESS SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Summarized financial information by segment

Summarized financial information by segment is as follows:

	Coal - U.S.		Coal - Canada(1)			Coal - WMLP(2)			Power			Heritage			Corporate			Consolidated
	(In thousands)
December 31, 2014
Revenues	$	642,075	$	388,664		$	—		$	85,253		$	—		$	—		$	1,115,992
Restructuring charges	1,058		9,565			2,783			459			78			1,046			14,989
Operating income (loss)	24,183		(2,670		)	(2,783		)	(35,023		)	(14,858		)	(11,824		)	(42,975		)
Depreciation, depletion, and amortization	54,563		36,068			—			9,998			—			149			100,778
Total assets	650,626		635,155			307,752			172,104			15,969			47,972			1,829,578
Capital expenditures	30,597		19,147			—			527			—			55			50,326
December 31, 2013
Revenues	$	587,119	$	—		$	—		$	87,567		$	—		$	—		$	674,686
Restructuring charges	—		—			—			5,078			—			—			5,078
Operating income (loss)	44,471		—			—			4,907			(14,498		)	(9,518		)	25,362
Depreciation, depletion, and amortization	56,698		—			—			10,179			—			354			67,231
Total assets	705,816		—			—			180,684			15,497			44,688			946,685
Capital expenditures	27,064		—			—			790			—			737			28,591
December 31, 2012
Revenues	$	519,152	$	—		$	—		$	81,285		$	—		$	—		$	600,437
Operating income (loss)	48,235		—			—			8,244			(14,711		)	(12,896		)	28,872
Depreciation, depletion, and amortization	46,639		—			—			10,085			—			421			57,145
Total assets	703,315		—			—			189,599			15,508			27,693			936,115
Capital expenditures	18,804		—			—			2,070			—			158			21,032

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(1) The Canadian operations were acquired on April 28, 2014, therefore, information for the year ended December 31, 2014 includes approximately eight months of operations and there is no activity for 2013 and 2012.

(2) The operations reported under the segment Coal - WMLP were acquired on December 31, 2014, therefore, information for the year ended December 31, 2014 includes minimal operating activity and there is no activity for 2013 and 2012.

Reconciliation of segment operating income to income (loss)

A reconciliation of segment income from operations to loss before income taxes follows:

	Years Ended December 31,
	2014			2013			2012
	(In thousands)
Income (loss) from operations	$	(42,975	)	$	25,362		$	28,872
Loss on extinguishment of debt	(49,154		)	(64		)	(1,986		)
Interest expense	(84,234		)	(39,937		)	(42,677		)
Interest income	6,400			1,366			1,496
Loss on foreign exchange	(4,016		)	—			—
Other income	1,031			364			723
Loss before income taxes	$	(172,948	)	$	(12,909	)	$	(13,572	)

Schedule of revenue by major customers by segment

The Company derives its revenues from a few key customers. The customers from which more than 10% of total revenue has been derived and the percentage of total revenue from those customers is summarized as follows:

	December 31, 2014(2)			2013			2012
	(In thousands)
Customer A – Coal - Canada	$	144,863		$	—		$	—
Customer B – Coal - U.S.	128,104			117,545			126,982
Customer C – Coal - U.S	101,778			112,061			96,718
Customer D – Coal - U.S.	100,234			89,266			81,981
Customer E – Power	85,254			86,390			80,109
Customer F – Coal - U.S.	79,505			85,929			66,128
Customer G – Coal - U.S. (1)	44,234			25,958			26,525
Percentage of total revenue	61		%	77		%	80		%

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(1) The revenue from Customer G did not exceed 10% in 2013 or 2012.

(2) The revenue from Customers B, C, D, E, F and G did not exceed 10% in 2014.