Note 4 - Miscellaneous Other (Loss) Income (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

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

	Three Months Ended June 30,					Six Months Ended June 30,
	2021			2020		2021			2020
Interest Income	$	811		$	122	$	1,669		$	366
Royalty Income - Non-Operated Coal		673			2,893		2,274			7,397
Rental Income		245			325		460			822
Contract Buyout		—			30,144		—			40,969
Unrealized Loss on Commodity Derivative Instruments		(20,437	)		—		(20,437	)		—
Other		305			452		820			552
Miscellaneous Other (Loss) Income	$	(18,403	)	$	33,936	$	(15,214	)	$	50,106