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Financial instruments (Details 26) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gains (loss) recognized in OCI (effective portion) | $ (5,466) | $ (439) | $ 8,913
Gain (loss) reclassified from accumulated OCI to the consolidated statement of profit or loss | 11,412 | 6,018 | 10,190
Gain (loss) recognized on derivatives (ineffective portion) | 268 | (1,352) | (145)
Net Investment Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gains (loss) recognized in OCI (effective portion) | (277) | 0 | (901)
Interest rate swaps [member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gains (loss) recognized in OCI (effective portion) | (834) | 627 | 35
Interest rate swaps [member] | Gain loss on interest rate swap [Member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gain (loss) reclassified from accumulated OCI to the consolidated statement of profit or loss | 0 | 0 | 0
Gain (loss) recognized on derivatives (ineffective portion) | 242 | (1,258) | (229)
Cross-currency swaps [member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gains (loss) recognized in OCI (effective portion) | (1,924) | (1,299) | 5,367
Cross-currency swaps [member] | Gain loss on foreign exchange [Member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gain (loss) reclassified from accumulated OCI to the consolidated statement of profit or loss | 0 | 0 | 0
Gain (loss) recognized on derivatives (ineffective portion) | 26 | 16 | 84
Cross-currency swaps [member] | Interest income - loans [Member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gain (loss) reclassified from accumulated OCI to the consolidated statement of profit or loss | 7,611 | 0 | 0
Gain (loss) recognized on derivatives (ineffective portion) | 0 | (110) | 0
Forward foreign exchange [member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gains (loss) recognized in OCI (effective portion) | (2,708) | 233 | 3,511
Forward foreign exchange [member] | Net Investment Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gains (loss) recognized in OCI (effective portion) | (277) | 0 | (901)
Forward foreign exchange [member] | Interest income - loans [Member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gain (loss) reclassified from accumulated OCI to the consolidated statement of profit or loss | 3,991 | (4,751) | (1,821)
Gain (loss) recognized on derivatives (ineffective portion) | 0 | 0 | 0
Forward foreign exchange [member] | Interest income - securities at FVOCI [Member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gain (loss) reclassified from accumulated OCI to the consolidated statement of profit or loss | 0 | 0 | (694)
Gain (loss) recognized on derivatives (ineffective portion) | 0 | 0 | 0
Forward foreign exchange [member] | Interest expense - borrowings and debt [Member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gain (loss) reclassified from accumulated OCI to the consolidated statement of profit or loss | 0 | 0 | 0
Gain (loss) recognized on derivatives (ineffective portion) | 0 | 0 | 0
Forward foreign exchange [member] | Interest expenses - deposits [Member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gain (loss) reclassified from accumulated OCI to the consolidated statement of profit or loss | (190) | 1,672 | 166
Gain (loss) recognized on derivatives (ineffective portion) | 0 | 0 | 0
Forward foreign exchange [member] | Gain loss on foreign currency exchange [Member] | Cash Flow Hedging [Member] |  |  |
Disclosure of financial instruments [Line Items] |  |  |
Gain (loss) reclassified from accumulated OCI to the consolidated statement of profit or loss | 0 | 9,097 | 12,539
Gain (loss) recognized on derivatives (ineffective portion) | $ 0 | $ 0 | $ 0

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