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10. Financial instruments (Details 2) - ARS ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SummaryOfFinancialInstrumentsLineItems [Line Items]
Financial assets at amortized cost		$ 8,774,344
Financial assets at fair value through profit or loss	$ 3,381,550	4,366,675
Financial instruments		13,161,467
Interest income
SummaryOfFinancialInstrumentsLineItems [Line Items]
Financial assets at amortized cost	671,783	453,804	$ 362,558
Financial assets at fair value through profit or loss	0	0	0
Financial instruments	671,783	453,804	362,558
Exchange differences
SummaryOfFinancialInstrumentsLineItems [Line Items]
Financial assets at amortized cost	2,866,396	229,100	178,191
Financial assets at fair value through profit or loss	0	0	5,830
Financial instruments	2,866,396	229,100	184,021
Bank fees and expenses
SummaryOfFinancialInstrumentsLineItems [Line Items]
Financial assets at amortized cost	(8,509)	(2,883)	(5,928)
Financial assets at fair value through profit or loss	0	0	0
Financial instruments	(8,509)	(2,883)	(5,928)
Changes in fair value of financial assets
SummaryOfFinancialInstrumentsLineItems [Line Items]
Financial assets at amortized cost	0	0	0
Financial assets at fair value through profit or loss	746,532	474,896	781,486
Financial instruments	746,532	474,896	781,486
Adjustment to present value
SummaryOfFinancialInstrumentsLineItems [Line Items]
Financial assets at amortized cost	(327)	(431)	(485)
Financial assets at fair value through profit or loss	0	0	5,799
Financial instruments	(327)	(431)	5,314
Total
SummaryOfFinancialInstrumentsLineItems [Line Items]
Financial assets at amortized cost	3,529,343	679,590	534,336
Financial assets at fair value through profit or loss	746,532	474,896	793,115
Financial instruments	$ 4,275,875	$ 1,154,486	$ 1,327,451

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The amount of financial assets that are measured at fair value and for which gains (losses) are recognised in profit or loss. A financial asset shall be measured at fair value through profit or loss unless it is measured at amortised cost or at fair value through other comprehensive income. A gain (loss) on a financial asset measured at fair value shall be recognised in profit or loss unless it is part of a hedging relationship, it is an investment in an equity instrument for which the entity has elected to present gains and losses in other comprehensive income or it is a financial asset measured at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets]

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