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

4.

Inventory

Inventory consisted of the following (in thousands):

 

 

 

December 31,

 

 

 

2021

 

 

2020

 

Raw materials

 

$

5,162

 

 

$

—

 

Work in process

 

 

3

 

 

 

—

 

Finished goods

 

 

127

 

 

 

—

 

Total inventory

 

$

5,292

 

 

$

—

 

 

 

As of December 31, 2021, the Company’s inventory consisted of $4.8 million of raw material that is not expected to be sold in one year and is classified as long term within other assets on the consolidated balance sheet.