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Intangible assets and goodwill (Details 3) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | $ 147,411 | $ 148,816 |
Additions | 7,356 | 2,285 |
Amortization | (205) | (2,834) |
Impairment | (2,691) |  |
Increases (decreases) for transfers | (1,164) |  |
Other increases (decreases) | (582) | (856) |
Final balance | 150,125 | 147,411 | $ 148,816
Gross carrying amount [member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 164,668 | 167,059 | 164,058
Additions | 7,356 | 2,285 | 204
Impairment | (205) |  |
Increases (decreases) for transfers | (1,164) |  |
Other increases (decreases) | 300 | (4,676) | (1,024)
Final balance | 170,955 | 164,668 | 167,059
Accumulated depreciation and amortisation [member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | (17,257) | (18,243) | (10,935)
Additions | 0 | 0 | 0
Amortization | (2,691) | (2,834) | (3,477)
Other increases (decreases) | (882) | 3,820 | (10)
Final balance | (20,830) | (17,257) | (18,243)
Indeifinite Intangible assets [Member] | Goodwill [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 37,972 | 38,388 |
Additions | 6,205 | 0 |
Amortization | 0 | 0 |
Impairment | 0 |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | 0 | (416) |
Final balance | 44,177 | 37,972 | 38,388
Indeifinite Intangible assets [Member] | Gross carrying amount [member] | Goodwill [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 37,972 | 38,388 | 38,388
Additions | 6,205 | 0 | 0
Impairment | 0 |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | 0 | (416) | 0
Final balance | 44,177 | 37,972 | 38,388
Indeifinite Intangible assets [Member] | Accumulated depreciation and amortisation [member] | Goodwill [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 0 | 0 | 0
Additions | 0 | 0 | 0
Amortization | 0 | 0 | 0
Other increases (decreases) | 0 | 0 | 0
Final balance | 0 | 0 | 0
Brand names [member] | Finite intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 0 | 0 |
Additions | 0 | 0 |
Amortization | 0 | 0 |
Impairment | 0 |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | 0 | 0 |
Final balance | 0 | 0 | 0
Brand names [member] | Gross carrying amount [member] | Finite intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 0 | 3,821 |
Additions | 0 | 0 |
Impairment | 0 |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | 0 | (3,821) |
Final balance | 0 | 0 | 3,821
Brand names [member] | Accumulated depreciation and amortisation [member] | Finite intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 0 | (3,821) |
Additions | 0 | 0 |
Amortization | 0 | 0 |
Other increases (decreases) | 0 | 3,821 |
Final balance | 0 | 0 | (3,821)
Computer software [member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance |  | 23,251 | 23,062
Additions |  |  | 189
Other increases (decreases) |  |  | 0
Final balance |  |  | 23,251
Computer software [member] | Finite intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 7,046 | 9,813 |
Additions | 939 | 160 |
Amortization | 0 | (2,796) |
Impairment | (2,653) |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | (41) | (131) |
Final balance | 5,291 | 7,046 | 9,813
Computer software [member] | Gross carrying amount [member] | Finite intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 23,280 | 23,251 |
Additions | 939 | 160 |
Impairment | 0 |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | 841 | (131) |
Final balance | 25,060 | 23,280 | 23,251
Computer software [member] | Accumulated depreciation and amortisation [member] | Finite intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | (16,234) | (13,438) | (9,996)
Additions | 0 | 0 | 0
Amortization | (2,653) | (2,796) | (3,432)
Other increases (decreases) | (882) | 0 | (10)
Final balance | (19,769) | (16,234) | (13,438)
Copyrights, patents and other industrial property rights, service and operating rights [member] | Finite intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 460 | 464 |
Additions | 8 | 25 |
Amortization | 0 | (38) |
Impairment | (38) |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | (241) | 9 |
Final balance | 189 | 460 | 464
Copyrights, patents and other industrial property rights, service and operating rights [member] | Gross carrying amount [member] | Finite intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 1,483 | 1,448 | 1,524
Additions | 8 | 25 | 15
Impairment | 0 |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | (241) | 10 | (91)
Final balance | 1,250 | 1,483 | 1,448
Copyrights, patents and other industrial property rights, service and operating rights [member] | Accumulated depreciation and amortisation [member] | Finite intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | (1,023) | (984) | (939)
Additions | 0 | 0 | 0
Amortization | (38) | (38) | (45)
Other increases (decreases) | 0 | (1) | 0
Final balance | (1,061) | (1,023) | (984)
Copyrights, patents and other industrial property rights, service and operating rights [member] | Indeifinite Intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 98,596 | 96,500 |
Additions | 0 | 2,100 |
Amortization | (205) | 0 |
Impairment | 0 |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | 127 | (4) |
Final balance | 98,518 | 98,596 | 96,500
Copyrights, patents and other industrial property rights, service and operating rights [member] | Indeifinite Intangible assets [Member] | Gross carrying amount [member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 98,596 | 96,500 | 97,386
Additions | 0 | 2,100 | 0
Impairment | (205) |  |
Increases (decreases) for transfers | 0 |  |
Other increases (decreases) | 127 | (4) | (886)
Final balance | 98,518 | 98,596 | 96,500
Copyrights, patents and other industrial property rights, service and operating rights [member] | Indeifinite Intangible assets [Member] | Accumulated depreciation and amortisation [member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 0 | 0 | 0
Additions | 0 | 0 | 0
Amortization | 0 | 0 | 0
Other increases (decreases) | 0 | 0 | 0
Final balance | 0 | 0 | 0
Other Intangible Assets [Member] | Indeifinite Intangible assets [Member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 3,337 | 3,651 |
Additions | 204 | 0 |
Amortization | 0 | 0 |
Impairment | 0 |  |
Increases (decreases) for transfers | (1,164) |  |
Other increases (decreases) | (427) | (314) |
Final balance | 1,950 | 3,337 | 3,651
Other Intangible Assets [Member] | Indeifinite Intangible assets [Member] | Gross carrying amount [member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 3,337 | 3,651 | 3,698
Additions | 204 | 0 | 0
Impairment | 0 |  |
Increases (decreases) for transfers | (1,164) |  |
Other increases (decreases) | (427) | (314) | (47)
Final balance | 1,950 | 3,337 | 3,651
Other Intangible Assets [Member] | Indeifinite Intangible assets [Member] | Accumulated depreciation and amortisation [member] |  |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |  |
Opening balance | 0 | 0 | 0
Additions | 0 | 0 | 0
Amortization | 0 | 0 | 0
Other increases (decreases) | 0 | 0 | 0
Final balance | $ 0 | $ 0 | $ 0

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- Definition The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2017-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2017-03-01&anchor=para_118_e_i&doctype=Standard -URIDate 2017-03-09 + Details
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