Inventories (Tables)

9 Months Ended

Sep. 30, 2013

Inventory Disclosure [Abstract]

Components of Inventories

The components of inventories were as follows:

	September 30,		December 31,
	2013		2012
	(in thousands)
Raw materials	$	14,792	$	16,422
Work in process		23,025		19,234
Inventories	$	37,817	$	35,656