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Intangible assets (Tables) | 12 Months Ended
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Dec. 31, 2019
Intangible Assets And Goodwill [Abstract] |
Reconciliation of carrying amount of goodwill and intangibles |
At December 31, 2019 |  |  |  |  |  |  |  |
|  |  |  |  |  | Intellectual |  |
|  |  |  | Contracts |  | property |  | Total
Cost |  |  |  |  |  |  |  |
Beginning of year |  |  | $ | 119,371 | $ | 118,819 | $ | 238,190
Effect of movements in exchange rates |  |  |  | (5,664) |  | - |  | (5,664)
End of year |  |  |  | 113,707 |  | 118,819 |  | 232,526
Accumulated amortization and impairment |  |  |  |  |  |  |  |
Beginning of year |  |  |  | 115,434 |  | 57,154 |  | 172,588
Amortization charge |  |  |  | 1,181 |  | 3,868 |  | 5,049
Effect of movements in exchange rates |  |  |  | (5,521) |  | - |  | (5,521)
End of year |  |  |  | 111,094 |  | 61,022 |  | 172,116
Net book value at December 31, 2019 |  |  | $ | 2,613 | $ | 57,797 | $ | 60,410
At December 31, 2018 |  |  |  |  |  |  |  |
|  |  |  |  |  | Intellectual |  |
|  |  |  | Contracts |  | property |  | Total
Cost |  |  |  |  |  |  |  |
Beginning of year |  |  | $ | 109,812 | $ | 118,819 | $ | 228,631
Effect of movements in exchange rates |  |  |  | 9,559 |  | - |  | 9,559
End of year |  |  |  | 119,371 |  | 118,819 |  | 238,190
Accumulated amortization and impairment |  |  |  |  |  |  |  |
Beginning of year |  |  |  | 104,939 |  | 53,680 |  | 158,619
Amortization charge |  |  |  | 1,325 |  | 3,474 |  | 4,799
Effect of movements in exchange rates |  |  |  | 9,170 |  | - |  | 9,170
End of year |  |  |  | 115,434 |  | 57,154 |  | 172,588
Net book value at December 31, 2018 |  |  | $ | 3,937 | $ | 61,665 | $ | 65,602

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- Definition The disclosure of the reconciliation of changes in intangible assets and goodwill. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 118 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118&doctype=Standard -URIDate 2019-03-27 + Details
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- References No definition available. + Details
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