XML 121 R104.htm IDEA: XBRL DOCUMENT
v3.21.1

Fair value of financial instruments - Effect of unobservable inputs on fair value measurement (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($)
Positive Effect On Fair Value Measurements [Member] |
Disclosure of Fair value of financial instruments [Line Items] |
Change in fair value measurement due to change in one or more unobservable inputs to reflect reasonably possible alternative assumptions, assets | $ (149)
Negative Effect On Fair Value Measurements [Member] |
Disclosure of Fair value of financial instruments [Line Items] |
Change in fair value measurement due to change in one or more unobservable inputs to reflect reasonably possible alternative assumptions, assets | $ 154

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

X
- Definition The amount of increase in the fair value measurement of assets due to a change in one or more unobservable inputs to reflect reasonably possible alternative assumptions. + References No definition available. + Details
Name: | blx_IncreaseInFairValueMeasurementDueToChangeInOneOrMoreUnobservableInputsToReflectReasonablyPossibleAlternativeAssumptionsAsset
Namespace Prefix: | blx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_MeasurementAxis=blx_PositiveEffectOnFairValueMeasurementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MeasurementAxis=blx_NegativeEffectOnFairValueMeasurementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |