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Inventories (Tables)
3 Months Ended
Mar. 31, 2018
Inventories, net  
Summary of Inventories

 

 

 

 

 

 

 

 

 

March 31, 

 

December 31, 

 

    

2018

    

2017

Component parts

 

$

4,932

 

$

4,691

Work-in-process and finished goods

 

 

6,572

 

 

7,349

Total

 

$

11,504

 

$

12,040