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Intangible assets and goodwill (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Intangible Assets And Goodwill [Abstract] |
Disclosure of detailed information about intangible assets [text block] |
13.1 | Balances
|  | 12/31/2017 |  | 12/31/2016 |
|  | ThUS$ |  | ThUS$ |
Intangible assets other than goodwill |  | 105,948 |  | 109,439 |
Goodwill (1) |  | 44,177 |  | 37,972 |
Total |  | 150,125 |  | 147,411 |
| (1) | The recoverable amount of the cash-generating unit has been determined based on a calculation of the value in use which used cash flow projections for a 5 -year period, plus perpetuity.
Disclosure of detailed information about intangible assets and goodwill explanatory [Text Block] | Balances and movements in the main classes of intangible assets as of December 31, 2017 and December 31, 2016 are detailed as follows:
|  |  |  |  | 12/31/2017 |
Intangible assets and goodwill |  | Useful life |  |  | Gross amount ThUS$ |  |  | Accumulated Amortization ThUS$ |  |  | Net Value ThUS$ |
Software |  | Finite |  |  | 25,060 |  |  | (19,769) |  |  | 5,291 |
Intellectual property rights, patents and other industrial property rights, service |  | Finite |  |  | 1,250 |  |  | (1,061) |  |  | 189 |
Intellectual property rights, patents and other industrial property rights, service |  | Indefinite |  |  | 98,518 |  |  | - |  |  | 98,518 |
Other intangible assets |  | Indefinite |  |  | 1,950 |  |  | - |  |  | 1,950 |
Intangible assets other than goodwill |  |  |  |  | 126,778 |  |  | (20,830) |  |  | 105,948 |
Goodwill |  | Indefinite |  |  | 44,177 |  |  | - |  |  | 44,177 |
Total intangible assets and goodwill |  |  |  |  | 170,955 |  |  | (20,830) |  |  | 150,125 |
|  |  |  |  | 12/31/2016 |
Intangible assets and goodwill |  | Useful life |  |  | Gross amount ThUS$ |  |  | Accumulated Amortization ThUS$ |  |  | Net Value ThUS$ |
Software |  | Finite |  |  | 23,280 |  |  | (16,234) |  |  | 7,046 |
Intellectual property rights, patents and other industrial property rights, service |  | Finite |  |  | 1,483 |  |  | (1,023) |  |  | 460 |
Intellectual property rights, patents and other industrial property rights, service |  | Indefinite |  |  | 98,596 |  |  | - |  |  | 98,596 |
Other intangible assets |  | Indefinite |  |  | 3,337 |  |  | - |  |  | 3,337 |
Intangible assets other than goodwill |  |  |  |  | 126,696 |  |  | (17,257) |  |  | 109,439 |
Goodwill |  | Indefinite |  |  | 37,972 |  |  | - |  |  | 37,972 |
Total intangible assets and goodwill |  |  |  |  | 164,668 |  |  | (17,257) |  |  | 147,411 |
Description of detailed information about estimated usefull life of intangible assets other than goodwill [Text Block] | c) Minimum and maximum amortization lives or rates of intangible assets:
| Estimated useful lives or amortization rate | Minimum life or rate | Maximum life or rate
| Intellectual property rights, patents and other industrial property rights, service and exploitation rights | Indefinite | Indefinite
| Intangible assets other than goodwill | Indefinite | Indefinite
| Intellectual property rights, patents and other industrial property rights, service and exploitation rights | 1 year | 16 years
| Trademarks | 1 year | 5 years
| Software | 2 years | 6 years
Disclosure of reconciliation of changes in intangible assets and goodwill [text block] | Movements in identifiable intangible assets as of December 31, 2017:
Movements in identifiable intangible assets, gross |  | Trademarks |  | Software |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Other intangible assets |  | Goodwill |  | Identifiable intangible assets |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Opening balance |  | - |  | 23,280 |  | 1,483 |  | 98,596 |  | 3,337 |  | 37,972 |  | 164,668 |
Additions |  | - |  | 939 |  | 8 |  | - |  | 204 |  | 6,205 |  | 7,356 |
Impairment |  | - |  | - |  | - |  | (205) |  | - |  | - |  | (205) |
Increases (decreases) for transfers |  | - |  | - |  | - |  | - |  | (1,164) |  | - |  | (1,164) |
Other increases (decreases) |  | - |  | 841 |  | (241) |  | 127 |  | (427) |  | - |  | 300 |
Final balance |  | - |  | 25,060 |  | 1,250 |  | 98,518 |  | 1,950 |  | 44,177 |  | 170,955 |
Movements in identifiable intangible assets, accumulated amortization |  | Trademarks |  | Software |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Other intangible assets |  | Goodwill |  | Identifiable intangible assets |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Opening balance |  | - |  | (16,234) |  | (1,023) |  | - |  | - |  | - |  | (17,257) |
Additions |  | - |  | - |  | - |  | - |  | - |  | - |  | - |
Amortization |  | - |  | (2,653) |  | (38) |  | - |  | - |  | - |  | (2,691) |
Other increases (decreases) |  | - |  | (882) |  | - |  | - |  | - |  | - |  | (882) |
Final balance |  | - |  | (19,769) |  | (1,061) |  | - |  | - |  | - |  | (20,830) |
Movements in identifiable intangible assets, net |  | Trademarks |  | Software |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Intellectual property rights, patents and other industrial property rights, service rights of way |  | Other intangible assets |  | Goodwill |  | Identifiable intangible assets |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Opening balance |  | - |  | 7,046 |  | 460 |  | 98,596 |  | 3,337 |  | 37,972 |  | 147,411 |
Additions |  | - |  | 939 |  | 8 |  | - |  | 204 |  | 6,205 |  | 7,356 |
Amortization |  | - |  | - |  | - |  | (205) |  | - |  | - |  | (205) |
Impairment |  | - |  | (2,653) |  | (38) |  | - |  | - |  | - |  | (2,691) |
Increases (decreases) for transfers |  | - |  | - |  | - |  | - |  | (1,164) |  | - |  | (1,164) |
Other increases (decreases) |  | - |  | (41) |  | (241) |  | 127 |  | (427) |  | - |  | (582) |
Final balance |  | - |  | 5,291 |  | 189 |  | 98,518 |  | 1,950 |  | 44,177 |  | 150,125 |
| g) | Movements in identifiable intangible assets as of December 31, 2016:
Movements in identifiable intangible assets, gross |  | Trademarks |  | Software |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Other intangible assets |  | Goodwill |  | Identifiable intangible assets |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Opening balance |  | 3,821 |  | 23,251 |  | 1,448 |  | 96,500 |  | 3,651 |  | 38,388 |  | 167,059 |
Additions |  | - |  | 160 |  | 25 |  | 2,100 |  | - |  | - |  | 2,285 |
Other increases (decreases) |  | (3,821) |  | (131) |  | 10 |  | (4) |  | (314) |  | (416) |  | (4,676) |
Final balance |  | - |  | 23,280 |  | 1,483 |  | 98,596 |  | 3,337 |  | 37,972 |  | 164,668 |
g)
Movements in identifiable intangible assets as of December 31, 2016:
Movements in identifiable intangible assets, accumulated amortization |  | Trademarks |  | Software |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Other intangible assets |  | Goodwill |  | Identifiable intangible assets |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Opening balance |  | (3,821) |  | (13,438) |  | (984) |  | - |  | - |  | - |  | (18,243) |
Additions |  | - |  | - |  | - |  | - |  | - |  | - |  | - |
Amortization |  | - |  | (2,796) |  | (38) |  | - |  | - |  | - |  | (2,834) |
Other increases (decreases) |  | 3,821 |  | - |  | (1) |  | - |  | - |  | - |  | 3,820 |
Final balance |  | - |  | (16,234) |  | (1,023) |  | - |  | - |  | - |  | (17,257) |
Movements in identifiable intangible assets, net |  | Trademarks |  | Software |  | Intellectual property rights, patents and other industrial property rights, service rights of way |  | Intellectual property rights, patents and other industrial property rights, service rights of way |  | Other intangible assets |  | Goodwill |  | Identifiable intangible assets |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Opening balance |  | - |  | 9,813 |  | 464 |  | 96,500 |  | 3,651 |  | 38,388 |  | 148,816 |
Additions |  | - |  | 160 |  | 25 |  | 2,100 |  | - |  | - |  | 2,285 |
Amortization |  | - |  | (2,796) |  | (38) |  | - |  | - |  | - |  | (2,834) |
Other increases (decreases) |  | - |  | (131) |  | 9 |  | (4) |  | (314) |  | (416) |  | (856) |
Final balance |  | - |  | 7,046 |  | 460 |  | 98,596 |  | 3,337 |  | 37,972 |  | 147,411
h)
Movements in identifiable intangible assets as of December 31, 2015:
Movements in identifiable intangible assets, gross |  | Software |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Other intangible assets |  | Goodwill |  | Identifiable intangible assets |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Opening balance |  | 23,062 |  | 1,524 |  | 97,386 |  | 3,698 |  | 38,388 |  | 164,058 |
Additions |  | 189 |  | 15 |  | - |  | - |  | - |  | 204 |
Other increases (decreases) |  | - |  | (91) |  | (886) |  | (47) |  | - |  | (1,024) |
Final balance |  | 23,251 |  | 1,448 |  | 96,500 |  | 3,651 |  | 38,388 |  | 163,238 |
Movements in identifiable intangible assets, accumulated amortization |  | Software |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Intellectual property rights, patents and other industrial property rights, service, rights of way |  | Other intangible assets |  | Goodwill |  | Identifiable intangible assets |
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |
Opening balance |  | (9,996) |  | (939) |  | - |  | - |  | - |  | (10,935) |
Additions |  | - |  | - |  | - |  | - |  | - |  | - |
Amortization |  | (3,432) |  | (45) |  | - |  | - |  | - |  | (3,477) |
Other increases (decreases) |  | (10) |  | - |  | - |  | - |  | - |  | (10) |
Final balance |  | (13,438) |  | (984) |  | - |  | - |  | - |  | (14,422) |

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