Inventories (Tables)

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Components of Inventories

The components of inventories consisted of the following as of the respective periods:

(in thousands)	March 31, 2015		December 31, 2014
Work in process	$	18,934	$	15,652
Raw materials	16,617		16,749
Inventories	$	35,551	$	32,401