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Transactions in Soles (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure of Transactions in Soles [Abstract] |
Disclosure of Detailed Information Of Assets And Liabilities Denominated In Foreign Currency [Text Block] | As of December 31, 2018 and 2017, the Group presents the following assets and liabilities originally denominated in Soles by its equivalent in U.S. dollars:
|  | 2018 |  |  | 2017 |
|  | US$(000) |  |  | US$(000) |
Assets |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  | 11,526 |  |  |  | 6,233 |
Trade and other receivables |  |  | 88,513 |  |  |  | 154,506 |
Income tax credit |  |  | 24,277 |  |  |  | 24,779 |
Prepaid expenses |  |  | - |  |  |  | 1,182 |
|  |  | 124,316 |  |  |  | 186,700 |
Liabilities |  |  |  |  |  |  |  |
Bank loans |  |  | - |  |  |  | (1,215 | )
Trade and other payables |  |  | (53,962 | ) |  |  | (100,860 | )
Income tax payable |  |  | (2,080 | ) |  |  | (7,088 | )
Provisions and contingent liability |  |  | (31,282 | ) |  |  | (35,572 | )
|  |  | (87,324 | ) |  |  | (144,735 | )
Net asset position |  |  | 36,992 |  |  |  | 41,965 |

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