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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventories

Inventories consist of the following (in thousands):

 

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Raw materials

 

$

1,668

 

 

$

586

 

Work-in-progress

 

 

116

 

 

 

73

 

Finished goods

 

 

279

 

 

 

560

 

Total inventories

 

$

2,063

 

 

$

1,219