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COSTS AND EXPENSES BY NATURE (Details) - Schedule of restructuring activities expenses - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Schedule of restructuring activities expenses [Abstract]      
Fair value adjustment of fleet available for sale $ 331,522
Rejection of aircraft lease contract 269,467
Employee restructuring plan [1] 290,831
Legal and financial advice 76,541
Others 21,648
Total $ 990,009
[1] See note 2.1, letter c.