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Inventories
 6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Inventories INVENTORIES
Inventory, net of write-downs, as of June 30, 2022 and December 31, 2021 were as follows (in thousands):

June 30, 2022December 31, 2021
(unaudited)
Raw materials$2,298 $1,544 
Work in-process2,762 2,447 
Finished goods6 94 
Total inventory, net$5,066 $4,085 

The Company's inventory as of June 30, 2022 and December 31, 2021 was written down by $827 and $1,122, respectively, in order to reduce inventory to the lower of cost or to its net realizable value.