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Trade accounts payable
12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Trade accounts payable
15.
Trade accounts payable
 
   
2019
   
2018
 
Domestic trade accounts payable
   94,887    115,672 
Foreign suppliers
   290    1,736 
Other
   2,648    428 
  
 
 
   
 
 
 
  
 
97,825
 
  
 
117,836
 
Accounts payable are unsecured and the average payment term is 45 days. The carrying amount of accounts payable approximate their fair value, due to their short-term nature.