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Inventories (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of inventories

Inventories consist of the following:

 

 

 

March 31,

 

 

December 31,

 

 

 

2021

 

 

2020

 

Raw materials

 

$

486

 

 

$

435

 

Work-in-process

 

 

623

 

 

 

420

 

Total inventories

 

$

1,109

 

 

$

855