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Fair value of financial instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total financial assets at fair value through profit or loss | $ 4,949 | $ 6,492 | $ 0
Total derivative financial instrument -assets | 27,778 | 11,157 |
Total securities and other financial assets | 236,297 | 13,475 |
Securities and other financial assets, net | 398,068 | 88,794 |
Total financial assets at fair value | 264,075 | 24,632 |
Total derivative financial instrument - liabilities | 9,211 | 14,675 |
Total financial liabilities at fair value | 9,211 | 14,675 |
Debt securities [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total financial assets at fair value through profit or loss | 4,949 | 6,492 |
Level 1 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 0 |
Total securities and other financial assets | 0 | 0 |
Total financial assets at fair value | 0 | 0 |
Total derivative financial instrument - liabilities | 0 | 0 |
Total financial liabilities at fair value | 0 | 0 |
Level 1 of fair value hierarchy [member] | Debt securities [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total financial assets at fair value through profit or loss | 0 | 0 |
Level 2 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 27,778 | 11,157 |
Total securities and other financial assets | 231,348 | 6,983 |
Total financial assets at fair value | 259,126 | 18,140 |
Total derivative financial instrument - liabilities | 9,211 | 14,675 |
Total financial liabilities at fair value | 9,211 | 14,675 |
Level 2 of fair value hierarchy [member] | Debt securities [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total financial assets at fair value through profit or loss | 0 | 0 |
Level 3 |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 0 |
Total securities and other financial assets | 4,949 | 6,492 |
Total financial assets at fair value | 4,949 | 6,492 |
Total derivative financial instrument - liabilities | 0 | 0 |
Total financial liabilities at fair value | 0 | 0 |
Level 3 | Debt securities [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total financial assets at fair value through profit or loss | 4,949 | 6,492 |
Interest rate swaps [Member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 1,831 | 407 |
Total derivative financial instrument - liabilities | 1,774 | 1,903 |
Interest rate swaps [Member] | Level 1 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 0 |
Total derivative financial instrument - liabilities | 0 | 0 |
Interest rate swaps [Member] | Level 2 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 1,831 | 407 |
Total derivative financial instrument - liabilities | 1,774 | 1,903 |
Interest rate swaps [Member] | Level 3 |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 0 |
Total derivative financial instrument - liabilities | 0 | 0 |
Cross-currency interest rate swaps [Member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 25,947 | 10,125 |
Total derivative financial instrument - liabilities | 3,848 | 10,197 |
Cross-currency interest rate swaps [Member] | Level 1 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 0 |
Total derivative financial instrument - liabilities | 0 | 0 |
Cross-currency interest rate swaps [Member] | Level 2 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 25,947 | 10,125 |
Total derivative financial instrument - liabilities | 3,848 | 10,197 |
Cross-currency interest rate swaps [Member] | Level 3 |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 0 |
Total derivative financial instrument - liabilities | 0 | 0 |
Foreign exchange forwards |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 625 |
Total derivative financial instrument - liabilities | 3,589 | 2,575 |
Foreign exchange forwards | Level 1 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 0 |
Total derivative financial instrument - liabilities | 0 | 0 |
Foreign exchange forwards | Level 2 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 625 |
Total derivative financial instrument - liabilities | 3,589 | 2,575 |
Foreign exchange forwards | Level 3 |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Total derivative financial instrument -assets | 0 | 0 |
Total derivative financial instrument - liabilities | 0 | 0 |
Securities at FVOCI - Corporate debt |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss | 226,235 |  |
Securities at FVOCI - Corporate debt | Level 1 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss | 0 |  |
Securities at FVOCI - Corporate debt | Level 2 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss | 226,235 |  |
Securities at FVOCI - Corporate debt | Level 3 |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss | 0 |  |
Securities at FVOCI - Sovereign debt |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss | 5,113 | 5,094 |
Securities at FVOCI - Sovereign debt | Level 1 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss | 0 | 0 |
Securities at FVOCI - Sovereign debt | Level 2 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss | 5,113 | 5,094 |
Securities at FVOCI - Sovereign debt | Level 3 |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss | $ 0 | 0 |
Equity instrument at FVOCI |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss |  | 1,889 |
Equity instrument at FVOCI | Level 1 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss |  | 0 |
Equity instrument at FVOCI | Level 2 of fair value hierarchy [member] |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss |  | 1,889 |
Equity instrument at FVOCI | Level 3 |  |  |
Disclosure of Fair value of financial instruments [Line Items] |  |  |
Financial assets at fair value through profit or loss |  | $ 0 |

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