Inventories

12 Months Ended

Dec. 31, 2020

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are summarized as follows:

	December 31
	2020		2019
Coal	$	17,695	$	15,700
Mining supplies	29,856		24,765
Total inventories	$	47,551	$	40,465

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.