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Corporate information (Details Textual)	12 Months Ended
	Dec. 31, 2017
Bladex Representaçao Ltda. [Member] | Bladex Head Office [Member]
Disclosure of notes and other explanatory information [Line Items]
Proportion of ownership interest in subsidiary	99.999%
Bladex Representaçao Ltda. [Member] | Bladex Holdings Inc. [Member]
Disclosure of notes and other explanatory information [Line Items]
Proportion of ownership interest in subsidiary	0.001%
Bladex Investimentos Ltda. [Member] | Bladex Head Office [Member]
Disclosure of notes and other explanatory information [Line Items]
Proportion of ownership interest in subsidiary	99.00%
Bladex Investimentos Ltda. [Member] | Bladex Holdings Inc. [Member]
Disclosure of notes and other explanatory information [Line Items]
Proportion of ownership interest in subsidiary	1.00%
Bladex Development Corp. [Member] | Bladex Head Office [Member]
Disclosure of notes and other explanatory information [Line Items]
Proportion of ownership interest in subsidiary	100.00%
BLX Soluciones [Member] | Bladex Head Office [Member]
Disclosure of notes and other explanatory information [Line Items]
Proportion of ownership interest in subsidiary	99.90%
BLX Soluciones [Member] | Bladex Development Corp. [Member]
Disclosure of notes and other explanatory information [Line Items]
Proportion of ownership interest in subsidiary	0.10%

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The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2017-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
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-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2017-01-01
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-Subparagraph b
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-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-URIDate 2017-03-09

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