Inventory (Tables)

6 Months Ended

Jun. 30, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory

The major classes of inventory were as follows:

Inventory	June 30, 2014		December 31, 2013
	(in thousands)
Raw materials	$	30,311	$	42,402
Work-in-progress	39,755		27,911
Finished goods	16,243		16,792
Total	$	86,309	$	87,105