Inventories (Tables)

6 Months Ended

Jun. 30, 2014

Inventories [Abstract]

Schedule of Inventories

As of June 30, 2014 and December 31, 2013, inventories consisted of the following:

(in thousands)	June 30, 2014	December 31, 2013
Raw materials	$29,322	$25,754
Work in process	50,132	45,998
Finished goods	44,435	40,987
Total inventories	$123,889	$112,739