XML 147 R133.htm IDEA: XBRL DOCUMENT
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Prepaid expenses (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Disclosure of Prepaid expenses [Line Items] |  |  |
Non-current lease prepayments | [1] | $ 28,349 | $ 29,235
Life of underlying assets |  | 35 years |
Empresa de Generacion Huanza S.A. [Member] |  |  |
Disclosure of Prepaid expenses [Line Items] |  |  |
Non-current lease prepayments |  | $ 31,000 |
[1] | This item corresponds to the balance of an original prepayment of US$31 million for the lease of hydraulic installations by the subsidiary Empresa de Generacion Huanza S.A. This prepayment is being charged to results during the life of the underlying assets (35 years) since January 2015.

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- Definition The length of life of underlying assets. + References No definition available. + Details
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- Definition The amount of non-current prepayments for leases. [Refer: Non-current prepayments] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
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- Details
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