PROPERTY, PLANT AND EQUIPMENT (Details 5) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Property, plant and equipment [abstract]
Gross book value of fully depreciated property, plant and equipment still in use		$ 192,606	$ 136,811
Commitments for the acquisition of aircraft	[1]	$ 14,400,000	$ 15,400,000

[1] Acording to the manufacturer's price list.