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Financial instruments with off-balance sheet credit risk (Details 2) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | $ 386,118 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk | $ 480,423 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk
Argentina [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 0 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = stpr_AR | 295 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = stpr_AR
Bolivia [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 0 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_BO | 80 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_BO
Brazil [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 19,698 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_BR | 22,567 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_BR
Chile [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 27,802 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_CL | 0 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_CL
Colombia [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 53,874 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = stpr_CO | 38,545 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = stpr_CO
Costa Rica [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 0 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_CR | 897 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_CR
Dominican Republic [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 14,806 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_DO | 108 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_DO
Ecuador [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 86,436 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_EC | 153,072 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_EC
El Salvador [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 25 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_SV | 25 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_SV
Guatemala [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 37,988 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_GT | 43,548 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_GT
Honduras [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 412 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_HN | 412 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_HN
Jamaica [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 415 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_JM | 338 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_JM
Mexico [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 64,324 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_MX | 20,969 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_MX
Netherlands [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 0 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_NL | 17,833 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_NL
Panama [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 20,675 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = stpr_PA | 96,943 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = stpr_PA
Paraguay [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 418 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_PY | 2 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_PY
Peru [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 16,225 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_PE | 41,063 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_PE
Switzerland [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 1,000 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_CH | 1,000 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_CH
United Kingdom [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 0 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_GB | 70 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_GB
Uruguay [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | 40,946 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_UY | 40,946 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_UY
Venezuela [Member] |  |
Off-balance Sheet Risks [Line Items] |  |
Financial Instruments With Off-Balance Sheet Credit Risk | $ 1,074 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_VE | $ 1,710 blx_FinancialInstrumentsWithOffBalanceSheetCreditRisk / blx_AllCountriesAxis = country_VE

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- Definition The total amount of instruments with off-balance sheet credit risk at the reporting date. + References No definition available. + Details
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Balance Type: | credit
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Name: | blx_AllCountriesAxis=country_MX
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Name: | blx_AllCountriesAxis=country_NL
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Name: | blx_AllCountriesAxis=stpr_AR
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