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5. Financial risk management (Details 6) - ARS ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | $ 3,381,550 | $ 4,278,008
Liabilities | 1,035 | 291
Derivative financial instruments |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Liabilities | 1,035 | 291
Level 1 |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 3,381,550 | 4,278,008
Liabilities | 0 | 0
Level 1 | Derivative financial instruments |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Liabilities | 0 | 0
Level 2 |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 0 | 0
Liabilities | 1,035 | 291
Level 2 | Derivative financial instruments |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Liabilities | 1,035 | 291
Level 3 |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 0 | 0
Liabilities | 0 | 0
Level 3 | Derivative financial instruments |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Liabilities | 0 | 0
Government bonds |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 3,285,799 | 1,829,888
Government bonds | Level 1 |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 3,285,799 | 1,829,888
Government bonds | Level 2 |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 0 | 0
Government bonds | Level 3 |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 0 | 0
Money market funds |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 95,751 | 2,448,120
Money market funds | Level 1 |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 95,751 | 2,448,120
Money market funds | Level 2 |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | 0 | 0
Money market funds | Level 3 |  |
SummaryOfFinancialRiskManagementLineItems [Line Items] |  |
Assets | $ 0 | $ 0

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