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Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Inventories  
Components of inventories

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

June 30, 

December 31, 

    

2021

    

2020

 

Inventories:

Raw materials

$

28,274

$

24,738

Work in process

 

27,024

 

24,215

Finished goods

 

3,628

 

2,562

$

58,926

$

51,515