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Business Segments (Tables)

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Segment Reporting Information

The following tables present revenue, operating profit, depreciation expense and capital expenditures:

			THREE MONTHS ENDED												NINE MONTHS ENDED
			SEPTEMBER 30												SEPTEMBER 30
			2021						2020						2021						2020
Revenues
Coal Mining			$	23,682					$	20,395					$	70,484					$	62,896
NAMining			17,693						9,443						51,321						33,115
Minerals Management			10,607						2,722						21,715						9,950
Unallocated Items			1,594						904						2,647						1,257
Eliminations			(1,834)						(1,169)						(3,424)						(1,924)
Total			$	51,742					$	32,295					$	142,743					$	105,294
Operating profit (loss)
Coal Mining			$	23,121					$	11,174					$	40,347					$	25,857
NAMining			312						244						1,225						1,519
Minerals Management			9,454						1,673						17,862						6,450
Unallocated Items			(5,170)						(3,623)						(14,738)						(12,341)
Eliminations			(125)						(70)						(104)						(25)
Total			$	27,592					$	9,398					$	44,592					$	21,460

Expenditures for property, plant and equipment and acquisition of mineral interests
Coal Mining			$	5,646					$	3,150					$	10,378					$	7,817
NAMining			13,309						3,220						19,127						10,406
Minerals Management			450						633						5,948						1,372
Unallocated Items			2						—						81						207
Total			$	19,407					$	7,003					$	35,534					$	19,802
Depreciation, depletion and amortization
Coal Mining			$	4,323					$	3,793					$	12,657					$	10,951
NAMining			1,014						723						2,843						2,021
Minerals Management			423						327						1,392						981
Unallocated Items			36						33						106						91
Total			$	5,796					$	4,876					$	16,998					$	14,044

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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599

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- References

No definition available.

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