Inventories (Tables)

9 Months Ended

Sep. 30, 2014

Inventories [Abstract]

Schedule of Inventories

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

(in thousands)	September 30, 2014		December 31, 2013
Raw materials	$	29,208	$	25,754
Work in process		47,383		45,998
Finished goods		45,001		40,987
Total inventories	$	121,592	$	112,739