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Property, Plant, and Equipment (Tables)
9 Months Ended
Sep. 30, 2022
Property, Plant and Equipment [Abstract]  
Components of property, plant and equipment
Property, plant, and equipment consist of the following (in thousands):
 
    
September 30, 2022
    
December 31, 2021
    
Estimated Useful Life
 
Buildings and land
   $ 1,301      $ 1,222        30 years - Buildings  
Enterprise hardware and software
     1,849        1,858        3 years  
Leaseholds
     1,745        1,796       
Lesser of lease term or estimated
useful life
​​​​​​​
 
 
Equipment
     1,220        1,094        7 years  
Furniture
     200        203        5 years  
    
 
 
    
 
 
          
Property, plant and equipment, gross
     6,315        6,173           
Accumulated depreciation
     (4,863      (4,825         
    
 
 
    
 
 
          
Property, plant and equipment, net
   $ 1,452      $ 1,348