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v3.21.1

Applicable laws and regulations (Details 1) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Cash [abstract] |  |
Ordinary capital | $ 912,164 | $ 890,106
Non-risk weighted asset | $ 6,479,416 | $ 7,323,187
Leverage Ratio | 14.08% | 12.15%

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- Definition Amount of non risk weighted assets. + References No definition available. + Details
Name: | blx_NonRiskWeightedAssets
Namespace Prefix: | blx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Ordinary Capital. + References No definition available. + Details
Name: | blx_OrdinaryCapital
Namespace Prefix: | blx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Percentage of leverage ratio. + References No definition available. + Details
Name: | blx_PercentageOfLeverageRatio
Namespace Prefix: | blx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | ifrs-full_CashAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration