INVENTORIES

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

INVENTORIES

4. INVENTORIES

Inventories consisted of the following:

	June 30, 2018			December 31, 2017
	(In thousands)
Coal stockpiles	$	69,918		$	38,145
Materials and supplies	71,610			73,517
Reserve for obsolete inventory	(4,288		)	(4,867		)
Total	$	137,240		$	106,795