Note 2 - Revenue from Contracts with Customers: (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended September 30, 2022
	Domestic		Export		Total
Power Generation	$	228,488	$	53,329	$	281,817
Industrial		6,670		117,435		124,105
Metallurgical		3,536		63,150		66,686
Total Coal Revenue		238,694		233,914		472,608
Terminal Revenue						14,840
Freight Revenue						42,619
Total Revenue from Contracts with Customers					$	530,067

	Three Months Ended September 30, 2021
	Domestic		Export		Total
Power Generation	$	146,845	$	26,390	$	173,235
Industrial		3,233		57,534		60,767
Metallurgical		2,233		22,325		24,558
Total Coal Revenue		152,311		106,249		258,560
Terminal Revenue						14,108
Freight Revenue						19,348
Total Revenue from Contracts with Customers					$	292,016

	Nine Months Ended September 30, 2022
	Domestic		Export		Total
Power Generation	$	655,834	$	203,364	$	859,198
Industrial		17,464		371,093		388,557
Metallurgical		3,536		230,377		233,913
Total Coal Revenue		676,834		804,834		1,481,668
Terminal Revenue						58,016
Freight Revenue						131,419
Total Revenue from Contracts with Customers					$	1,671,103

	Nine Months Ended September 30, 2021
	Domestic		Export		Total
Power Generation	$	414,565	$	86,626	$	501,191
Industrial		9,470		230,771		240,241
Metallurgical		4,653		57,842		62,495
Total Coal Revenue		428,688		375,239		803,927
Terminal Revenue						49,700
Freight Revenue						72,371
Total Revenue from Contracts with Customers					$	925,998