LEASING EQUIPMENT, NET (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) aircraft commercial_jet_engine	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Lessor, Lease, Description [Line Items]
Leasing equipment	$ 1,026,691		$ 1,026,691		$ 770,366
Less: accumulated depreciation	(83,158)		(83,158)		(63,032)
Property, plant and equipment, net	945,052		$ 945,052		708,853
Number of aircraft acquired | aircraft			14
Commercial jet engines acquired | commercial_jet_engine			24
Aircraft sold | aircraft			5
Commercial engines sold | commercial_jet_engine			37
Depreciation expense for leasing equipment	6,822	$ 5,273	$ 20,117	$ 15,435
Gain on sale of equipment, net	37,061	262	61,416	5,253
Assets Leased to Others
Lessor, Lease, Description [Line Items]
Leasing equipment	1,787,431		1,787,431		1,672,156
Less: accumulated depreciation	(288,752)		(288,752)		(239,946)
Property, plant and equipment, net	1,498,679		1,498,679		$ 1,432,210
Depreciation expense for leasing equipment	$ 36,034	$ 28,249	$ 103,080	$ 78,719