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OTHER FINANCIAL LIABILITIES (Details) - Schedule of hedging instruments - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Interest rate swaps [Member] |  |  |
OTHER FINANCIAL LIABILITIES (Details) - Schedule of hedging instruments [Line Items] |  |  |
Fair values of net assets/ (liabilities) | [1] | $ (2,734) | $ (2,734)
Currency options CLP/US$ |  |  |
OTHER FINANCIAL LIABILITIES (Details) - Schedule of hedging instruments [Line Items] |  |  |
Fair values of net assets/ (liabilities) |  | $ 17,641 | $ 1,296
[1] | Hedge significant variations in cash flows associated with market risk implicit in the changes in the price of future fuel purchases. These contracts are recorded as cash flow hedges.

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