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Employee benefits (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure of detailed information about provision for employee benefits [Abstract] |
Disclosure of detailed information about provision for employee benefits [Text Block] |
Classes of benefits and expenses by employee |  | As of December 31, 2021 |  |  | As of December 31, 2020 |
|  | ThUS$ |  |  | ThUS$ |
Current
Profit sharing and bonuses |  |  | 1,383 |  |  |  | 7,770 |
Performance bon u s and operational targets |  |  | 25,392 |  |  |  | 1,326 |
Total |  |  | 26,775 |  |  |  | 9,096 |
Non-current
Profit sharing and bonuses |  |  | - |  |  |  | - |
Severance indemnity payments |  |  | 27,099 |  |  |  | 32,199 |
Total |  |  | 27,099 |  |  |  | 32,199 |
Disclosure of detailed information about post employment benefit obligations [Text Block] |
Reconciliation Changes in the benefit obligation |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Opening balance |  |  | 9,864 |  |  |  | 9,586 |  |  |  | 8,657 |
cost of service |  |  | - |  |  |  | - |  |  |  | - |
Interest cost |  |  | 240 |  |  |  | 280 |  |  |  | 336 |
Actuarial loss |  |  | (135 | ) |  |  | 506 |  |  |  | 984 |
Benefits paid |  |  | (419 | ) |  |  | (508 | ) |  |  | (391 | )
Total benefit obligation (A) |  |  | 9,550 |  |  |  | 9,864 |  |  |  | 9,586 |
Reconciliation Changes in plan assets |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Fair value of plan assets at the start of the year |  |  | 12,888 |  |  |  | 8,754 |  |  |  | 8,404 |
Actual gains on plan assets |  |  | 1,028 |  |  |  | 4,642 |  |  |  | 741 |
Benefits paid |  |  | (419 | ) |  |  | (508 | ) |  |  | (391 | )
Fair value of plan assets as of the year-end (B) |  |  | 13,497 |  |  |  | 12,888 |  |  |  | 8,754 |
Net value (A – B) |  |  | 3,947 |  |  |  | 3,025 |  |  |  | (832 | )
Items not yet recognized as components of net periodic pension costs: |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss at the beginning of the year |  |  | 192 |  |  |  | (3,634 | ) |  |  | (3,022 | )
Amortization during the year |  |  | - |  |  |  | 326 |  |  |  | 242 |
Estimated net gain for the year |  |  | 847 |  |  |  | 3,500 |  |  |  | (854 | )
Movement to recognize minimum pension obligations |  |  | 1,039 |  |  |  | 192 |  |  |  | (3,634 | )
Cost of service or benefits received during the year |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Cost of service or benefits received during the year |  |  | - |  |  |  | - |  |  |  | - |
Interest cost of benefit obligation |  |  | 240 |  |  |  | 280 |  |  |  | 336 |
Actual gains on plan assets |  |  | 1,028 |  |  |  | 4,642 |  |  |  | 741 |
Amortization of prior year losses |  |  | - |  |  |  | 326 |  |  |  | 242 |
Net gains during the year |  |  | 847 |  |  |  | 3,500 |  |  |  | (854 | )
Net periodic pension costs |  |  | (76 | ) |  |  | (31 | ) |  |  | (33 | )
Disclosure of net defined benefit liability (asset) [text block] | As of December 31, 2021, and 2020, severance indemnities calculated at the actuarial value are as follows:
Staff severance indemnities |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Opening balance |  |  | (32,199 | ) |  |  | (27,814 | ) |  |  | (28,233 | )
Current cost of service |  |  | (4,978 | ) |  |  | (3,804 | ) |  |  | (2,880 | )
Interest cost |  |  | (1,303 | ) |  |  | (1,486 | ) |  |  | (1,661 | )
Actuarial gain loss |  |  | 3,999 |  |  |  | (2,826 | ) |  |  | (2,514 | )
Exchange rate difference |  |  | 4,971 |  |  |  | (1,513 | ) |  |  | 2,475 |
Benefits paid during the year |  |  | 2,411 |  |  |  | 5,244 |  |  |  | 4,999 |
Total |  |  | (27,099 | ) |  |  | (32,199 | ) |  |  | (27,814 | )
Disclosure of detailed information about employee Actuarial assumption rate [Text Block] | The liability recorded for staff severance indemnity is valued at the actuarial value method, using the following actuarial assumptions:
Actuarial assumptions |  | As of December 31, 2021 |  |  | As of December 31, 2020 |  |  | As of December 31, 2019 |  |  | Annual/Years |
Mortality rate |  |  | RV - 2014 |  |  |  | RV - 2014 |  |  |  | RV - 2014 |  |  |  |  |
Actual annual interest rate |  |  | 5.67 | % |  |  | 3.65 | % |  |  | 3.68 | % |  |  |  |
Voluntary retirement rate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Men |  |  | 6.49 | % |  |  | 6.49 | % |  |  | 6.49 | % |  |  | Annual |
Women |  |  | 6.49 | % |  |  | 6.49 | % |  |  | 6.49 | % |  |  | Annual |
Salary increase |  |  | 3.00 | % |  |  | 3.00 | % |  |  | 3.00 | % |  |  | Annual |
Retirement age: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Men |  |  | 65 |  |  |  | 65 |  |  |  | 65 |  |  |  | Years |
Women |  |  | 60 |  |  |  | 60 |  |  |  | 60 |  |  |  | Years |
Disclosure Of Sensitivity Analysis For Actuarial Assumptions Explanatory [Text Block] | As of December 31, 2021, and 2020, the Company has conducted a sensitivity analysis of the main assumptions of the actuarial calculation, determining the following:
Sensitivity analysis as of December 31, 2021 |  | Effect + 100 basis points |  |  | Effect - 100 basis points |
|  | ThUS$ |  |  | ThUS$ |
Discount rate |  |  | (1,614 | ) |  |  | 1,817 |
Employee turnover rate |  |  | (212 | ) |  |  | 237 |
Sensitivity analysis as of December 31, 2020 |  | Effect + 100 basis points |  |  | Effect - 100 basis points |
|  | ThUS$ |  |  | ThUS$ |
Discount rate |  |  | (1,985 | ) |  |  | 2,234 |
Employee turnover rate |  |  | (261 | ) |  |  | 291 |

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