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

3 Months Ended

Mar. 31, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended March 31, 2022
	Domestic		Export		Total
Power Generation	$	223,500	$	120,441	$	343,941
Industrial		1,944		97,549		99,493
Metallurgical		—		32,934		32,934
Total Coal Revenue		225,444		250,924		476,368
Terminal Revenue						21,397
Freight Revenue						38,389
Total Revenue from Contracts with Customers					$	536,154

	Three Months Ended March 31, 2021
	Domestic		Export		Total
Power Generation	$	155,310	$	33,131	$	188,441
Industrial		2,836		80,574		83,410
Metallurgical		1,070		12,614		13,684
Total Coal Revenue		159,216		126,319		285,535
Terminal Revenue						18,212
Freight Revenue						27,013
Total Revenue from Contracts with Customers					$	330,760