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Property, Plant, and Equipment (Tables)
 6 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Property Plant And Equipment [Abstract]    
Components of property, plant and equipment

Property, plant, and equipment consist of the following:

 

(in thousands)    June 30,
2019		      December 31,
2018		      Estimated Useful Life  

Buildings and land

    $ 589      $ 589        30 years - Buildings  

Enterprise hardware and software

      1,742        1,742        3 years  

Leaseholds

      1,700        1,701       

 Lesser of lease term
or estimated useful
life		  
 
 

Equipment

      1,003        1,002        7 years  

Furniture

      198        198        5 years  
  

 

 

     

 

 

     

Property, plant and equipment, gross

      5,232        5,232     

Accumulated depreciation

      (4,427 )       (4,307 )    
  

 

 

     

 

 

     

Property, plant and equipment, net

    $ 805      $ 925     
  

 

 

     

 

 

     

Property, plant, and equipment consists of:

 

(in thousands)    December 31, 2018     December 31, 2017     Estimated Useful Life  

Buildings and land

    $ 589     $ 579       30 years-Buildings  

Enterprise hardware and software

      1,742       1,744       3 years  

Leaseholds

      1,701       1,705      
 Lesser of lease term or
estimated useful life		  
 

Equipment

      1,002       971       7 years  

Furniture

      198       175       5 years  
  

 

 

    

 

 

    

Property, plant and equipment, gross

      5,232       5,174    

Accumulated depreciation

      (4,307 )      (3,876 )   
  

 

 

    

 

 

    

Property, plant and equipment, net

    $ 925     $ 1,298