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Segment Reporting (Tables)
 9 Months Ended
Sep. 30, 2018
Segment Reporting [Abstract]  
Product Sales by Geographic Location

Product sales by geographic location for the three and nine months ended September 30, 2018 and 2017 are listed in the table below (in thousands):

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2018

 

 

2017

 

 

2018

 

 

2017

 

Europe

 

$

—

 

 

$

23

 

 

$

—

 

 

$

155

 

Middle East

 

 

—

 

 

 

-

 

 

 

—

 

 

 

18

 

Total

 

$

—

 

 

$

23

 

 

$

—

 

 

$

173