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Inventories (Tables)
 12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventories

Inventories consist of the following:

 

 

 

December 31,

 

 

 

2017

 

 

2016

 

 

 

(In thousands)

 

Raw material

 

$

2,543

 

 

$

3,511

 

Finished goods

 

 

6,372

 

 

 

9,357

 

Total

 

$

8,915

 

 

$

12,868