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Inventory, net
 12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventory, net

8. Inventory, net

Inventory, net consisted of the following (in thousands):

 

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Finished goods

 

$

3,264

 

 

$

2,756

 

Raw materials

 

 

64

 

 

 

—

 

Work in process

 

 

50

 

 

 

—

 

Less: Inventory reserve

 

 

(16

)

 

 

(20

)

Inventory, net

 

$

3,362

 

 

$

2,736