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2. Inventories
9 Months Ended
Sep. 30, 2014
Inventory Disclosure [Abstract]  
Inventories

Inventories are stated at the lower of cost or market. Cost is determined by using the first-in, first-out method. The following table details the major components of inventories (in thousands):

 

    September 30,     December 31,  
    2014     2013  
Raw materials   $ 12,314     $ 10,744  
Work in process     7,097       6,246  
Finished goods     8,997       9,276  
Total inventories   $ 28,408     $ 26,266