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Inventories (Tables)
 9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Schedule of inventories

Inventories consist of the following:

 

(in thousands)    September 30,
2019		      December 31,
2018		  

Raw materials

    $ 351      $ 358  

Work-in-process

      350        500  

Finished goods

      35        —    
  

 

 

     

 

 

  

Total inventories

    $ 736      $ 858  
  

 

 

     

 

 

  

Inventories consist of:

 

(in thousands)    December 31,
2018		      December 31,
2017		  

Raw materials

    $ 358      $ 298  

Work-in-process

      500        721  

Finished goods

      —        229  
  

 

 

     

 

 

  

Total Inventory

    $ 858      $ 1,248