Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventories

Schedule of major classes of inventories

Our major classes of inventories were as follows as of March 31, 2014 and December 31, 2013 (in thousands):

	March 31, 2014		December 31, 2013
Raw materials	$	4,116	$	3,157
Work in process	8,929		8,322
Finished goods	7,759		5,738
Total inventories	$	20,804	$	17,217