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OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | $ 499,504 | $ 383,984 | $ 559,919
Non-current assets | 46,907 | 58,700 | 88,090
Total Assets | 546,411 | 442,684 |
Cross currency swap of currencies | 499,504 | 383,984 | 559,919
Cross currency swap of currencies | 46,907 | 58,700 | $ 88,090
Cross currency swap of currencies | 546,411 | 442,684 |
Cross currency swap of currencies [Member] | Hedging Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | 3 |  |
Non-current assets |  |  |
Total Assets | 3 |  |
Cross currency swap of currencies | 3 |  |
Cross currency swap of currencies |  |  |
Cross currency swap of currencies | 3 |  |
Fair Value Of Interest Rate Derivatives [Member] | Hedging Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | 27,044 | 19,460 |
Non-current assets | 2,676 |  |
Total Assets | 29,720 | 19,460 |
Cross currency swap of currencies | 27,044 | 19,460 |
Cross currency swap of currencies | 2,676 |  |
Cross currency swap of currencies | 29,720 | 19,460 |
Fair Value Of Foreign Currency Derivatives [Member] | Hedging Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | 586 | 3,895 |
Non-current assets |  |  |
Total Assets | 586 | 3,895 |
Cross currency swap of currencies | 586 | 3,895 |
Cross currency swap of currencies |  |  |
Cross currency swap of currencies | 586 | 3,895 |
Fair Value Of Fuel Price Derivatives [Member] | Hedging Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | 48,542 | 23,355 |
Non-current assets | 2,676 |  |
Total Assets | 48,542 | 23,355 |
Cross currency swap of currencies | 48,542 | 23,355 |
Cross currency swap of currencies | 2,676 |  |
Cross currency swap of currencies | 48,542 | 23,355 |
Foreign Currency Derivatives Not Recognized As A Hedge [Member] | Derivatives Not Recognized As A Hedge Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets |  | 19,396 |
Non-current assets |  |  |
Total Assets |  | 19,396 |
Cross currency swap of currencies |  | 19,396 |
Cross currency swap of currencies |  |  |
Cross currency swap of currencies |  | 19,396 |
Private Investment Funds [Member] | Other Financial Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | 386,669 | 322,428 |
Non-current assets |  |  |
Total Assets | 386,669 | 322,428 |
Cross currency swap of currencies | 386,669 | 322,428 |
Cross currency swap of currencies |  |  |
Cross currency swap of currencies | 386,669 | 322,428 |
Deposits In Guarantee (Aircraft) [Member] | Other Financial Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | 8,934 | 9,610 |
Non-current assets | 28,599 | 37,636 |
Total Assets | 37,533 | 47,246 |
Cross currency swap of currencies | 8,934 | 9,610 |
Cross currency swap of currencies | 28,599 | 37,636 |
Cross currency swap of currencies | 37,533 | 47,246 |
Guarantees For Margins Of Derivatives [Member] | Other Financial Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | 21,200 | 661 |
Non-current assets |  |  |
Total Assets | 21,200 | 661 |
Cross currency swap of currencies | 21,200 | 661 |
Cross currency swap of currencies |  |  |
Cross currency swap of currencies | 21,200 | 661 |
Other Investments [Member] | Other Financial Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets |  |  |
Non-current assets | 494 | 494 |
Total Assets | 494 | 494 |
Cross currency swap of currencies |  |  |
Cross currency swap of currencies | 494 | 494 |
Cross currency swap of currencies | 494 | 494 |
Domestic And Foreign Bonds [Member] | Other Financial Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | 19 | 1,394 |
Non-current assets |  |  |
Total Assets | 19 | 1,394 |
Cross currency swap of currencies | 19 | 1,394 |
Cross currency swap of currencies |  |  |
Cross currency swap of currencies | 19 | 1,394 |
Other Guarantees Given [Member] | Other Financial Assets Categories [Member] |  |  |
OTHER FINANCIAL ASSETS (Details) - Schedule of other financial assets [Line Items] |  |  |
Current assets | 6,507 | 7,140 |
Non-current assets | 15,138 | 20,570 |
Total Assets | 21,645 | 27,710 |
Cross currency swap of currencies | 6,507 | 7,140 |
Cross currency swap of currencies | 15,138 | 20,570 |
Cross currency swap of currencies | $ 21,645 | $ 27,710 |

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