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Salaries and other employee expenses (Tables)
12 Months Ended
Dec. 31, 2017
Disclosure of employee benefits [Abstract]  
Disclosure of employee benefits [text block]
 
 
December 31,
2017
 
December 31,
2016
 
December 31,
2015
 
Wages and salaries
 
 
16,191
 
 
16,132
 
 
15,500
 
Payroll taxes
 
 
2,629
 
 
2,244
 
 
2,264
 
Personnel benefits
 
 
5,442
 
 
3,090
 
 
8,613
 
Share–based payments
 
 
3,391
 
 
3,730
 
 
4,058
 
Total
 
 
27,653
 
 
25,196
 
 
30,435