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Inventories (Tables)
 3 Months Ended
Mar. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of inventories

Inventories are comprised of the following (in thousands):

 

 

 

March 31,

2017

 

 

December 31,

2016

 

Raw materials

 

$

1,524

 

 

$

1,408

 

Work in process

 

 

1,518

 

 

 

1,306

 

Finished goods

 

 

1,008

 

 

 

924

 

Total Inventories, net

 

$

4,050

 

 

$

3,638