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v3.22.1

Fee and commission income - Schedule of ordinary income that is expected to be recognized on the contracts in force (Details) $ in Thousands | Dec. 31, 2021 USD ($)
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Statement [Line Items] |
Ordinary income expected to be recognized on the contracts | $ 2,700
Up to 1 year |
Statement [Line Items] |
Ordinary income expected to be recognized on the contracts | 1,916
From 1 to 2 years |
Statement [Line Items] |
Ordinary income expected to be recognized on the contracts | 439
More than 2 years |
Statement [Line Items] |
Ordinary income expected to be recognized on the contracts | $ 345

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- Definition Accrued Ordinary Income + References No definition available. + Details
Name: | blx_AccruedOrdinaryIncome
Namespace Prefix: | blx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_MaturityAxis=blx_LaterThanOneYearNotLaterThanTwoYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_MaturityAxis=blx_LaterThanTwoYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |