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

5.

Inventory

Inventory consisted of the following (in thousands):

 

 

 

December 31,

 

 

 

2021

 

 

2020

 

Raw materials

 

$

7,274

 

 

$

6,770

 

Work-in-process

 

 

1,932

 

 

 

1,102

 

Finished goods

 

 

5,653

 

 

 

4,062

 

 

 

$

14,859

 

 

$

11,934

 

 

During the years ended December 31, 2021 and 2020, the Company made non-cash transfers of OCS Consoles from inventory to property and equipment (OCS Consoles loaned to customers) of $1.8 million and $1.2 million, respectively.