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PROPERTY AND EQUIPMENT, NET
 9 Months Ended
Sep. 30, 2023
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT, NET

5. PROPERTY AND EQUIPMENT, NET

 

Property and equipment are summarized below:

 

   September 30,   December 31, 
   2023   2022 
Machinery, vehicles and equipment  $3,209   $2,308 
Furniture and fixtures   208    208 
Computer hardware and software   638    591 
Leasehold improvements   368    368 
Construction in progress     1,896      499 
Property and equipment, gross   6,319    3,974 
Less: accumulated depreciation   (2,544)   (2,174)
Total property and equipment, net  $3,775   $1,800 

 

Depreciation expense was $143 and $40 for the three months ended September 30, 2023 and 2022, respectively.

 

Depreciation expense was $370 and $113 for the nine months ended September 30, 2023 and 2022, respectively.