5. Inventories

9 Months Ended

Sep. 30, 2015

Inventory Disclosure [Abstract]

5. Inventory

Inventories consist of the following for the periods indicated (in thousands):

	September 30, 2015		December 31, 2014
Raw materials	$	23,139	$	16,243
Work in process		26,594		13,379
Finished goods		10,504		4,158
	$	60,237	$	33,780

The lower of cost or market adjustment expensed for inventory for the three months ended September 30, 2015 and 2014 was $0.9 million and $0.4 million, respectively. The lower of cost or market adjustment expensed for inventory for the nine months ended September 30, 2015 and 2014 was $2.2 million and $1.2 million, respectively.