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Inventories (Tables)
9 Months Ended
Sep. 30, 2018
Inventories  
Components of inventories

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

 

 

 

 

 

 

 

 

 

 

 

September 30, 

 

December 31, 

 

 

    

2018

    

2017

 

Inventories:

 

 

 

 

 

 

 

Raw materials

 

$

29,750

 

$

23,554

 

Work in process

 

 

26,055

 

 

20,135

 

Finished goods

 

 

2,912

 

 

2,151

 

 

 

$

58,717

 

$

45,840