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Applicable laws and regulations - Schedule of leverage ratio cannot be lower, at any time, than 3%. The bank will inform to SBP as often as the compliance with the leverage ratio is determined (Details ) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Cash [abstract] |  |
Ordinary capital | $ 877,777 | $ 912,164
Non-risk-weighted assets | $ 8,107,810 | $ 6,479,416
Leverage ratio | 10.83% | 14.08%

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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