Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Revenues		$ 66,785	$ 59,478
Gain on asset sales		256	651
Total revenues and other income		67,041	60,129
Operating expenses
Operating and maintenance expenses		8,360	6,215
Depreciation, depletion and amortization		4,392	5,100
General and administrative expenses		4,350	4,336
Asset impairments		0	242
Total operating expenses		17,102	15,893
Income from operations		49,939	44,236
Other expense, net
Interest expense, net		(14,174)	(17,950)
Net income from continuing operations		35,765	26,286
Loss from discontinued operations		(46)	(1,948)
Net income		35,719	24,338
Net income attributable to NRP	[1]	35,719	24,338
Income attributable to preferred unitholders		(7,500)	(7,500)
Net income attributable to common unitholders and general partner		28,219	16,838
Net income attributable to common unitholders		27,655	16,501
Net income attributable to the general partner		$ 564	$ 337
Income from continuing operations per common unit
Basic (in dollars per share)		$ 2.26	$ 1.50
Diluted (in dollars per share)		1.75	1.16
Net income per common unit
Basic (in dollars per share)		2.26	1.35
Diluted (in dollars per share)		$ 1.75	$ 1.08
Comprehensive income (loss) from unconsolidated investment and other		$ 1,005	$ (1,125)
Comprehensive income		36,724	23,213
Coal Royalty and Other
Revenues		49,502	44,474
Soda Ash
Revenues		11,682	9,621
Transportation and processing services revenues | Coal Royalty and Other
Revenues		$ 5,601	$ 5,383

[1] Net income includes $7.5 million attributable to Preferred Unitholders that accumulated during the period, of which $7.35 million is allocated to the common unitholders and $0.15 million is allocated to the general partner