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Selling General and Administrative (Tables)
 12 Months Ended
Dec. 31, 2017
Selling, General and Administrative [abstract]  
Schedule of Selling, General and Administrative Expenses



 

 

 

 

 

 



 

 

Year ended December 31,



 

 

 2017 

 

 

 2016 

Selling, general and administrative

 

$

 19,320 

 

$

 15,616 

Workers' participation

 

 

 1,750 

 

 

 1,363 



 

 

 21,070 

 

 

 16,979 

Share-based payments

 

 

 3,841 

 

 

 14,138 



 

$

 24,911 

 

$

 31,117