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Inventories (Tables)
 9 Months Ended 12 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Schedule of inventories

Inventories consist of the following:

 

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

Raw materials

    $ 328      $ 346  

Work-in-process

      660        214  

Finished goods

      176        100  
  

 

 

     

 

 

  

Total inventories

    $ 1,164      $ 660  
  

 

 

     

 

 

  

Inventories consist of:

 

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

Raw materials

    $ 346      $ 360  

Work-in-process

      214        251  

Finished goods

      100        146  
  

 

 

     

 

 

  

Total Inventory

    $ 660      $ 757