Segment Information

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Segment Information

Segment Information

The Partnership's segments are strategic business units that offer distinct products and services to different customers in different geographies within the U.S. and that are managed accordingly. NRP has the following two operating segments:

Coal Royalty and Other—consists primarily of coal royalty properties and coal-related transportation and processing assets. Other assets include industrial mineral royalty properties, aggregates royalty properties, oil and gas royalty properties and timber. The Partnership's coal reserves are primarily located in Appalachia, the Illinois Basin and the Northern Powder River Basin in the United States. The Partnership's industrial minerals and aggregates properties are located in various states across the United States. The Partnership's oil and gas royalty assets are primarily located in Louisiana and its timber assets are primarily located in West Virginia.

Soda Ash—consists of the Partnership's 49% non-controlling equity interest in Ciner Wyoming, a trona ore mining operation and soda ash refinery in the Green River Basin of Wyoming. Ciner Wyoming mines trona and processes it into soda ash that is sold both domestically and internationally to the glass and chemicals industries.

Direct segment costs and certain other costs incurred at the corporate level that are identifiable and that benefit the Partnership's segments are allocated to the operating segments accordingly. These allocated costs generally include salaries and benefits, insurance, property taxes, legal, royalty, information technology and shared facilities services and are included in operating and maintenance expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss).

Corporate and Financing includes functional corporate departments that do not earn revenues. Costs incurred by these departments include interest and financing, corporate headquarters and overhead, centralized treasury, legal and accounting and other corporate-level activity not specifically allocated to a segment and are included in general and administrative expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss).

The following table summarizes certain financial information for each of the Partnership's business segments:

	Operating Segments
(In thousands)	Coal Royalty and Other		Soda Ash		Corporate and Financing		Total
For the Three Months Ended September 30, 2021
Revenues	$	50,055	$	6,672	$	—	$	56,727
Gain on asset sales and disposals	68		—		—		68
Operating and maintenance expenses	8,278		76		—		8,354
Depreciation, depletion and amortization	5,182		—		—		5,182
General and administrative expenses	—		—		4,052		4,052
Asset impairments	57		—		—		57
Interest expense, net	—		—		9,652		9,652
Net income (loss)	36,606		6,596		(13,704)		29,498
For the Three Months Ended September 30, 2020
Revenues	$	27,944	$	1,986	$	—	$	29,930
Operating and maintenance expenses	5,685		96		—		5,781
Depreciation, depletion and amortization	2,111		—		—		2,111
General and administrative expenses	—		—		3,634		3,634
Asset impairment	934		—		—		934
Interest expense, net	41		—		10,213		10,254
Net income (loss)	19,173		1,890		(13,847)		7,216
For the Nine Months Ended September 30, 2021
Revenues	$	120,967	$	11,246	$	—	$	132,213
Gain on asset sales and disposals	243		—		—		243
Operating and maintenance expenses	18,945		131		—		19,076
Depreciation, depletion and amortization	15,145		—		—		15,145
General and administrative expenses	—		—		11,550		11,550
Asset impairments	4,116		—		—		4,116
Interest expense, net	24		—		29,284		29,308
Net income (loss)	82,980		11,115		(40,834)		53,261
For the Nine Months Ended September 30, 2020
Revenues	$	95,490	$	5,200	$	—	$	100,690
Gain on asset sales and disposals	465		—		—		465
Operating and maintenance expenses	19,059		141		—		19,200
Depreciation, depletion and amortization	6,185		—		—		6,185
General and administrative expenses	—		—		11,168		11,168
Asset impairments	133,217		—		—		133,217
Interest expense, net	56		—		30,835		30,891
Net income (loss)	(62,562)		5,059		(42,003)		(99,506)