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Property, Plant, and Equipment (Tables)
3 Months Ended
Mar. 31, 2022
Property, Plant and Equipment [Abstract]  
Components of property, plant and equipment
(5)
Property, Plant, and Equipment
Property, plant, and equipment consist of the following (in thousands):

 
  
March 31,
2022
 
  
December 31,
2021
 
  
Estimated Useful Life
 
Buildings and land
   $ 1,222      $ 1,222  
 
 
30 years-
Buildings
 
Enterprise hardware and software
     1,858        1,858  
 
 
3 years
 
Leaseholds
     1,788        1,796  
 
 
Lesser of
lease
term or
estimated
useful
life
 
Equipment
     1,184        1,094  
 
 
7 years
 
Furniture
     202        203  
 
 
5 years
 
    
 
 
    
 
 
 
 
 
 
 
Property, plant and equipment, gross
     6,254        6,173  
 
 
 
 
Accumulated depreciation
     (4,848      (4,825
 
 
 
 
    
 
 
    
 
 
 
 
 
 
 
Property, plant and equipment, net
   $ 1,406      $ 1,348