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Inventories (Tables)
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Components of Inventory

Inventories consist of the following (in thousands):

 

 

 

December 31,

 

 

 

2020

 

 

2019

 

Raw materials

 

$

1,393

 

 

$

1,751

 

Work-in-process

 

 

2,484

 

 

 

1,432

 

Finished goods

 

 

1,096

 

 

 

972

 

Total inventory

 

$

4,973

 

 

$

4,155