Inventory (Tables)

6 Months Ended

Jun. 30, 2015

Inventory Disclosure [Abstract]

Schedule of Inventory

The major classes of inventory were as follows:

Inventory	June 30, 2015		December 31, 2014
	(in thousands)
Raw materials	$	35,712	$	40,533
Work-in-progress	77,150		34,095
Finished goods	14,917		6,822
Total	$	127,779	$	81,450