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Financial risk management, objectives and policies (Details Narrative) S/ in Thousands | 12 Months Ended
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Dec. 31, 2017 PEN (S/) Customer | Dec. 31, 2016 PEN (S/) Customer | Dec. 31, 2015 PEN (S/)
Disclosure of financial assets [line items] |  |  |
Total financial instruments at fair value | S/ 21,206 | S/ 657 | S/ 436
Description of market index impact |  |
A decrease of 10% on Lima stock exchange (BVL) market index could have an impact of approximately S/66,000 on the income or equity attributable to the Group, depending on whether or not the decline is significant or prolonged. An increase of 10% in the value of the listed securities would only impact equity but would not have an effect on profit or loss.
Revenue | S/ 1,225,639 | S/ 1,240,169 | S/ 1,231,015
Customer 6 [Member] | Trade receivables [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Number of customer | Customer | 6 |  |
Revenue | S/ 3,000 |  |
Percentage of entity's | 28.00% |  |
Customer 3 [Member] | Trade receivables [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Number of customer | Customer |  | 3 |
Revenue |  | S/ 3,000 |
Percentage of entity's |  | 21.00% |
Customer 25 [Member] | Trade receivables [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Number of customer | Customer | 25 |  |
Revenue | S/ 700 |  |
Percentage of entity's | 61.00% |  |
Customer 27 [Member] | Trade receivables [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Number of customer | Customer |  | 27 |
Revenue |  | S/ 700 |
Percentage of entity's |  | 68.00% |

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