Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventories [Abstract]

Schedule of Inventories

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

(in thousands)	March 31, 2014	December 31, 2013
Raw materials	$28,229	$25,754
Work in process	49,314	45,998
Finished goods	43,867	40,987
Total inventories	$121,410	$112,739