Supplementary Unrestricted Subsidiary Information (Tables)

12 Months Ended

Dec. 31, 2015

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

CONDENSED CONSOLIDATING BALANCE SHEETS

(in thousands)



	December 31, 2015
	Unrestricted Subsidiaries of NRP			NRP and its Restricted Subsidiaries		Total
ASSETS
Current assets (including affiliates)	$	21,540		$	99,589	$	121,129
Mineral rights, net	134,445			959,582		1,094,027
Equity in unconsolidated investment	—			261,942		261,942
Other non-current assets (including affiliates)	2,287			204,690		206,977
Total assets	$	158,272		$	1,525,803	$	1,684,075
LIABILITIES AND CAPITAL
Current portion of long-term debt, net	—			80,983		80,983
Other current liabilities (including affiliates)	7,351			48,313		55,664
Long-term debt, net (including affiliate)	85,000			1,219,013		1,304,013
Other non-current liabilities (including affiliates)	4,703			165,770		170,473
Partners' capital	64,663			11,673		76,336
Non-controlling interest	(3,445		)	51		(3,394		)
Total liabilities and capital	$	158,272		$	1,525,803	$	1,684,075

	December 31, 2014
	Unrestricted Subsidiaries of NRP			NRP and its Restricted Subsidiaries		Total
ASSETS
Current assets (including affiliates)	$	23,842		$	112,276	$	136,118
Mineral rights, net	446,938			1,334,914		1,781,852
Equity in unconsolidated investment	—			264,020		264,020
Other non-current assets (including affiliates)	4,156			258,578		262,734
Total assets	$	474,936		$	1,969,788	$	2,444,724
LIABILITIES AND CAPITAL
Current portion of long-term debt, net	—			80,983		80,983
Other current liabilities (including affiliates)	16,212			50,736		66,948
Long-term debt, net (including affiliate)	110,000			1,284,240		1,394,240
Other non-current liabilities (including affiliates)	5,193			177,205		182,398
Partners' capital	344,232			376,573		720,805
Non-controlling interest	(701		)	51		(650		)
Total liabilities and capital	$	474,936		$	1,969,788	$	2,444,724

Condensed Income Statement

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(in thousands)



	Year Ended December 31, 2015
	Unrestricted Subsidiaries of NRP			NRP and its Restricted Subsidiaries			Total
Revenues	$	56,091		$	432,758		$	488,849
Operating expenses	361,166			605,594			966,760
Loss from operations	(305,075		)	(172,836		)	(477,911		)
Other expense	4,065			89,744			93,809
Net loss	(309,140		)	(262,580		)	(571,720		)
Add: comprehensive loss from unconsolidated investment and other	—			(1,693		)	(1,693		)
Comprehensive loss	$	(309,140	)	$	(264,273	)	$	(573,413	)

	Year Ended December 31, 2014
	Unrestricted Subsidiaries of NRP			NRP and its Restricted Subsidiaries			Total
Revenues	$	56,840		$	342,912		$	399,752
Operating expenses	41,754			169,079			210,833
Income from operations	15,086			173,833			188,919
Other expense	662			79,427			80,089
Net income	14,424			94,406			108,830
Add: comprehensive loss from unconsolidated investment and other	—			(81		)	(81		)
Comprehensive income	$	14,424		$	94,325		$	108,749

	Year Ended December 31, 2013
	Unrestricted Subsidiaries of NRP			NRP and its Restricted Subsidiaries			Total
Revenues	$	14,386		$	343,731		$	358,117
Operating expenses	8,812			113,069			121,881
Income from operations	5,574			230,662			236,236
Other expense	39			64,119			64,158
Net income	5,535			166,543			172,078
Add: comprehensive income from unconsolidated investment and other	—			65			65
Comprehensive income	$	5,535		$	166,608		$	172,143