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Inventories (Tables)
 6 Months Ended
Jun. 30, 2016
Inventories  
Components of inventories

The components of inventories are summarized below (in thousands):

 

 

 

 

 

 

 

 

 

 

 

June 30, 

 

December 31, 

 

 

    

2016

    

2015

 

Inventories:

 

 

 

 

 

 

 

Raw materials

 

$
20,246

 

$
19,532

 

Work in process

 

 
15,918

 

 
16,007

 

Finished goods

 

 
2,461

 

 
2,473

 

 

 

$
38,625

 

$
38,012