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Inventories (Tables)
6 Months Ended
Jun. 30, 2020
Inventories  
Components of inventories

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

June 30, 

December 31, 

    

2020

    

2019

 

Inventories:

Raw materials

$

21,986

$

20,677

Work in process

 

25,261

 

24,946

Finished goods

 

2,339

 

3,529

$

49,586

$

49,152