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PROPERTY AND EQUIPMENT, NET
 12 Months Ended
Dec. 31, 2021
PROPERTY AND EQUIPMENT, NET [Abstract]  
PROPERTY AND EQUIPMENT, NET
6. PROPERTY AND EQUIPMENT, NET

Property and equipment, net, are recorded at historical cost and consist of the following:

    
December 31,
2021
    
December 31,
2020
  
Laboratory and production equipment
  
$
7,465
    
$
4,245
  
Computer equipment
    
637
      
765
  
Software
    
156
      
136
  
Furniture and fixtures
    
125
      
47
  
Leasehold improvements
    
790
      
-
  
Construction in process
    
3,610
      
35
  
     
12,783
      
5,228
  
Less: Accumulated depreciation
    
(3,875
)
    
(3,232
)
Property and equipment, net
  
$
8,908
    
$
1,996
  

Depreciation expense amounted to $1,041, $894 and $780 for the years ended December 31, 2021, 2020 and 2019, respectively.  The Company had disposals of $70 relating to property and equipment of $468 with accumulated depreciation of $398 for the year ended December 31, 2021. The disposals were not material for the year ended December 31, 2020.