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Inventories (Tables)
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Inventory

Inventories consisted of the following (in thousands):

 

 

 

March 31, 2018

 

 

December 31, 2017

 

Raw materials

 

$

695

 

 

$

681

 

Work in process

 

 

557

 

 

 

722

 

Finished goods

 

 

1,936

 

 

 

1,780

 

 

 

$

3,188

 

 

$

3,183