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Capital adequacy (Details Textual) | Dec. 31, 2012
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Minimum Capital Adequecy Ratio | 8.00%
Off Balance Sheet Irrevocable Contingency Transaction Ratio | 4.00%
Capital Adequacy Ratio | 17.00%

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- Definition Capital adequacy ratio of the bank at the end of period. + References No definition available. + Details
Name: | blx_CapitalAdequacyRatio
Namespace Prefix: | blx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Represents the minimum capital adequacy ratio of the bank at the end of period, according to the Panamanian Banking Law. + References No definition available. + Details
Name: | blx_MinimumCapitalAdequecyRatio
Namespace Prefix: | blx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Represents the minimum primary capital ratio of the bank at the end of period, according to the Panamanian Banking Law. + References No definition available. + Details
Name: | blx_OffBalanceSheetIrrevocableContingencyTransactionRatio
Namespace Prefix: | blx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant