Inventory (Tables)

9 Months Ended

Sep. 30, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory

The major classes of inventory were as follows:

Inventory	September 30, 2013		December 31, 2012
	(in thousands)
Raw materials	$	45,024	$	40,244
Work-in-progress	25,546		26,594
Finished goods	20,929		9,517
Total	$	91,499	$	76,355