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Capital management policies and procedures (Tables)
 12 Months Ended
Dec. 31, 2017
Capital management policies and procedures [Abstract]  
Capital management summary
At December 31, 2017 and 2016, the capital management is summarized as follows:
 
  
2017
  
2016
 
Stockholders’ equity
 
$
2,229,062
  
$
963,990
 
         
Total financial debt
  
898,618
   
10,070,457
 
Cash and cash equivalents
  
(461,554
)
  
(902,704
)
General financing
 
$
437,064
  
$
9,167,753
 
         
Ratio of total debt to stockholders’ equity
  
0.20
   
9.51