Note 4 - Miscellaneous Other Income (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Other Income (Loss) [Table Text Block]

	For the Years Ended December 31,
	2021		2020		2019
Sale of Certain Mining Rights	$	21,756	$	39,437	$	—
Royalty Income - Non-Operated Coal		8,661		12,032		22,208
Interest Income		3,287		1,230		2,937
Rental Income		1,095		1,314		2,517
Purchased Coal Sales		—		—		12,385
Contract Buyout		—		44,703		9,959
Sale of Certain Coal Lease Contracts		—		17,847		—
Other		3,595		10,323		3,343
Miscellaneous Other Income	$	38,394	$	126,886	$	53,349