Inventories (Tables)

6 Months Ended

Jun. 30, 2013

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following: 

	June 30		December 31
	2013		2012
	(In thousands)
Coal	$	177,238	$	180,917
Repair parts and supplies	163,631		172,139
Work-in-process	15,784		12,368
	$	356,653	$	365,424