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Property, Plant, and Equipment (Tables)
 9 Months Ended 12 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Property, Plant and Equipment [Abstract]    
Components of property, plant and equipment

Property, plant, and equipment consist of the following:

 

(in thousands)    September 30, 2017      December 31, 2016  

Buildings and land

    $ 574      $ 556  

Enterprise hardware and software

      1,648        1,532  

Leaseholds

      1,659        1,504  

Equipment

      960        940  

Furniture

      182        354  
  

 

 

     

 

 

  

Property, plant and equipment, gross

      5,023        4,886  

Accumulated depreciation

      (3,770 )       (3,803 ) 
  

 

 

     

 

 

  

Property, plant and equipment, net

    $ 1,253      $ 1,083  
  

 

 

     

 

 

  

Property, plant, and equipment consists of:

 

     December 31,      December 31,  
(in thousands)    2016      2015  

Buildings and land

    $ 556      $ 556  

Enterprise hardware and software

      1,532        1,520  

Leaseholds

      1,504        1,305  

Equipment

      940        902  

Furniture

      354        355  
  

 

 

     

 

 

  

Property, plant and equipment, gross

      4,886        4,638  

Accumulated depreciation

      (3,803 )       (3,506 ) 
  

 

 

     

 

 

  

Property, plant and equipment, net

    $ 1,083      $ 1,132