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Inventories (Tables)
6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Schedule of inventories

Inventories consist of the following:

 

(in thousands)    June 30, 2018      December 31, 2017  

Raw materials

   $ 339      $ 298  

Work-in-process

     755        721  

Finished goods

     156        229  
  

 

 

    

 

 

 

Total inventories

   $ 1,250      $ 1,248  
  

 

 

    

 

 

 

 

Inventories consist of:

 

(in thousands)

   December 31,
2017
     December 31,
2016
 

Raw materials

   $ 298      $ 346  

Work-in-process

     721        214  

Finished goods

     229        100  
  

 

 

    

 

 

 

Total Inventory

   $ 1,248      $ 660