Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventory Disclosure [Abstract]

Components of Inventories

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

(in thousands)	March 31, 2014		December 31, 2013
Raw materials	$	16,059	$	14,825
Work in process	17,044		13,168
Inventories	$	33,103	$	27,993