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v3.21.1

Applicable laws and regulations (Details 6) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Statutory reserve | $ 136,019 | $ 136,019
Dynamic Provision [Member] |  |
Statutory reserve | 136,019 | 136,019
Regulatory Credit Reserve [Member] |  |
Statutory reserve | $ 0 | $ 0

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- Definition A component of equity representing reserves created based on legal requirements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_StatutoryReserve
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | ifrs-full_ReservesWithinEquityAxis=blx_DynamicProvisionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ReservesWithinEquityAxis=blx_RegulatoryCreditReserveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |