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Loan commitments and financial guarantees contracts (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Disclosure of loans commitments and financial guarantees contracts [Line Items] |  |
Loan commitments and financial guarantee contracts | $ 564,898 | $ 493,372
Documentary letters of credit [Member] |  |
Disclosure of loans commitments and financial guarantees contracts [Line Items] |  |
Loan commitments and financial guarantee contracts | 216,782 | 169,320
Stand-by letters of credit and guarantees [Member] |  |
Disclosure of loans commitments and financial guarantees contracts [Line Items] |  |
Loan commitments and financial guarantee contracts | 210,497 | 255,481
Credit commitments [Member] |  |
Disclosure of loans commitments and financial guarantees contracts [Line Items] |  |
Loan commitments and financial guarantee contracts | $ 137,619 | $ 68,571

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