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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories consist of the following:

Inventories consist of the following:

 

               
   As of December 31, 
   2021   2020 
Raw materials  $4,819   $2,825 
Finished goods   1,682    1,545 
 Inventories, gross   6,501    4,370 
Allowance for excess quantities   (406)   (30)
 Inventories, net  $6,095   $4,340