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

Inventories are comprised of the following (in thousands):

 

 

 

September 30,

2017

 

 

December 31,

2016

 

Raw materials

 

$

1,501

 

 

$

1,408

 

Work in process

 

 

1,568

 

 

 

1,306

 

Finished goods

 

 

838

 

 

 

924

 

Total Inventories, net

 

$

3,907

 

 

$

3,638