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Property, plant and equipment consist of the following at:
 3 Months Ended
Mar. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, plant and equipment consist of the following at:

 

4.Property, Plant and Equipment

 

Property, plant and equipment consist of the following at:

 

(Dollars in thousands)   March 31,
2022		     December 31,
2021		  
Land   $ 52     $ 52  
Land improvements     238       238  
Buildings     6,988       5,650  
Leasehold improvements     317       317  
Vehicles     15       15  
Computers and related software     60,093       30,890  
Machinery and equipment     4,522       2,588  
Office furniture and fixtures     22       22  
Construction in progress     3,090       7,590  
      75,337       47,362  
Less: Accumulated depreciation     (7,092 )     (2,765 )
    $ 68,245     $ 44,597  

 

Depreciation expense was approximately $4.3 million and $75 thousand for the three months ended March 31, 2022 and the three months ended March 31, 2021, respectively.