Segment Information (Tables)

12 Months Ended

Dec. 31, 2015

The following table summarizes certain financial information for each of the Partnership's operating segments (in thousands):



	Operating Segments
For the Year Ended	Coal, Hard Mineral Royalty and Other			Soda Ash		VantaCore			Oil and Gas			Corporate and Financing			Total
December 31, 2015
Revenues (including affiliates)	$	246,353		$	49,918	$	139,013		$	53,565		$	—		$	488,849
Intersegment revenues (expenses)	21			—		(21		)	—			—			—
Depreciation, depletion and amortization	44,478			—		15,578			40,772			—			100,828
Asset impairment	307,800			—		6,218			367,576			—			681,594
Interest expense, net	—			—		—			—			(93,809		)	(93,809		)
Net income (loss)	(138,388		)	49,918		272			(377,365		)	(106,157		)	(571,720		)
Capital expenditures	428			—		14,039			30,457			—			44,924
Total assets at December 31, 2015	1,047,922			261,942		200,348			158,862			15,001			1,684,075

December 31, 2014
Revenues (including affiliates)	$	256,719		$	41,416	$	42,051		$	59,566		$	—		$	399,752
Depreciation, depletion and amortization	52,645			—		3,296			23,935			—			79,876
Asset impairment	26,209			—		—			—			—			26,209
Interest expense, net	—			—		—			—			(80,089		)	(80,089		)
Net income (loss)	143,678			41,416		32			14,338			(90,634		)	108,830
Capital expenditures	5,351			—		171,116			359,851			—			536,318
Total assets at December 31, 2014	1,403,762			264,020		219,658			540,713			16,571			2,444,724

December 31, 2013
Revenues (including affiliates)	$	306,851		$	34,186	$	—		$	17,080		$	—		$	358,117
Depreciation, depletion and amortization	58,502			—		—			5,875			—			64,377
Asset impairment	734			—		—			—			—			734
Interest expense, net	—			—		—			—			(64,158		)	(64,158		)
Net income (loss)	211,590			34,186		—			5,198			(78,896		)	172,078
Capital expenditures	—			293,085		—			75,019			—			368,104
Total assets at December 31, 2013	1,520,428			269,338		—			189,211			12,879			1,991,856