Inventories

12 Months Ended

Dec. 31, 2021

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are summarized as follows:

	December 31
	2021		2020
Coal	$	19,352	$	17,695
Mining supplies	34,733		29,856
Total inventories	$	54,085	$	47,551

During 2020, the Company recorded a $2.0 million inventory impairment charge in the line “Cost of sales” in the accompanying Consolidated Statements of Operations as mining costs exceeded net realizable value at MLMC.