Inventories (Tables)

12 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following: 

	December 31,
	2014		2013
	(In thousands)
Coal	$	71,901	$	117,531
Repair parts and supplies	118,352		137,497
Work-in-process	—		9,133
	$	190,253	$	264,161