Inventories

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consist of the following: 

	December 31, 2017		December 31, 2016
(In thousands)
Coal	$	54,692	$	37,268
Repair parts and supplies	74,268		76,194
	$	128,960	$	113,462

The repair parts and supplies are stated net of an allowance for slow-moving and obsolete inventories of $0.3 million at December 31, 2017 and $0.0 million at December 31, 2016.