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Inventories (Tables)
 9 Months Ended
Sep. 30, 2018
Inventories  
Summary of inventories

 

 

 

 

 

 

 

 

 

September 30, 

 

December 31, 

 

    

2018

    

2017

Raw materials

 

$

2,010

 

$

1,532

Work-in-progress

 

 

5,687

 

 

3,590

Finished goods

 

 

77,624

 

 

59,328

 

 

$

85,321

 

$

64,450