Business Segments (Tables)

9 Months Ended

Sep. 30, 2022

Segment Reporting [Abstract]

Segment Reporting Information

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

	THREE MONTHS ENDED				NINE MONTHS ENDED
	SEPTEMBER 30				SEPTEMBER 30
	2022		2021		2022		2021
Revenues
Coal Mining	$	22,599	$	20,946	$	70,163	$	63,577
NAMining	22,962		20,429		67,180		58,228
Minerals Management	16,172		10,607		40,888		21,715
Unallocated Items	1,092		1,594		1,901		2,647
Eliminations	(1,032)		(1,834)		(1,947)		(3,424)
Total	$	61,793	$	51,742	$	178,185	$	142,743
Operating profit (loss)
Coal Mining	$	6,089	$	21,985	$	34,616	$	37,769
NAMining	(210)		1,448		2,318		3,803
Minerals Management	10,616		9,454		35,317		17,862
Unallocated Items	(6,780)		(5,170)		(18,171)		(14,738)
Eliminations	103		(125)		365		(104)
Total	$	9,818	$	27,592	$	54,445	$	44,592

Expenditures for property, plant and equipment and acquisition of mineral interests
Coal Mining	$	3,141	$	5,646	$	11,141	$	10,378
NAMining	604		13,309		8,985		19,127
Minerals Management	11,397		450		12,346		5,948
Unallocated Items	1,944		2		9,532		81
Total	$	17,086	$	19,407	$	42,004	$	35,534
Depreciation, depletion and amortization
Coal Mining	$	4,257	$	4,306	$	12,683	$	12,534
NAMining	1,585		1,031		4,545		2,966
Minerals Management	660		423		1,781		1,392
Unallocated Items	67		36		175		106
Total	$	6,569	$	5,796	$	19,184	$	16,998