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5. Financial risk management (Details Narrative)
$ in Thousands
12 Months Ended
Dec. 31, 2018
ARS ($)
$ / $
Dec. 31, 2017
ARS ($)
$ / $
Financial Risk Management Details Narrative Abstract    
Exchange rate | $ / $ 37.70 18.65
Delinquent trade receivables $ 2,000,000 $ 1,500,000
Allowances 901,300 677,500
Financial assets 3,400,000 4,300,000
Receivables related to customers $ 10,400 $ 231,000