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Inventories (Tables)
 12 Months Ended
Dec. 31, 2016
Inventory Disclosure [Abstract]  
Summary of Inventories
The following is a summary of inventories (in thousands): 
 
 
December 31,
 
 
2016
 
2015
Raw Materials
 
$
2,157

 
$
2,599

Finished Goods
 
4,453

 
5,575

Inventories, Net
 
$
6,610

 
$
8,174