Inventories (Tables)

9 Months Ended

Sep. 30, 2015

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories are summarized as follows (in thousands):

	September 30, 2015		December 31, 2014
Coal	$	89,698	$	136,335
Raw materials, supplies and other	49,280		65,263
Total inventories	$	138,978	$	201,598