INTANGIBLE ASSETS AND LIABILITIES, NET - Summarized Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Intangible assets:
Total	$ 19,700
Total intangible assets, net	23,720	$ 27,692
Intangible liabilities:
Acquired unfavorable lease intangibles	7,151	5,170
Less: Accumulated amortization	(3,131)	(3,014)
Acquired unfavorable lease intangibles, net	4,020	2,156
Acquired favorable lease intangibles
Intangible assets:
Acquired favorable lease intangibles	35,349	49,762
Less: Accumulated amortization	(26,434)	(38,652)
Total	8,915	11,110
Customer relationships
Intangible assets:
Acquired favorable lease intangibles	35,513	35,513
Less: Accumulated amortization	(20,708)	(18,931)
Total	14,805	16,582
Operating Segments | Aviation Leasing
Intangible assets:
Total intangible assets, net	8,915	11,110
Intangible liabilities:
Acquired unfavorable lease intangibles	7,151	5,170
Less: Accumulated amortization	(3,131)	(3,014)
Acquired unfavorable lease intangibles, net	4,020	2,156
Operating Segments | Aviation Leasing | Acquired favorable lease intangibles
Intangible assets:
Acquired favorable lease intangibles	35,349	49,762
Less: Accumulated amortization	(26,434)	(38,652)
Total	8,915	11,110
Operating Segments | Aviation Leasing | Customer relationships
Intangible assets:
Acquired favorable lease intangibles	0	0
Less: Accumulated amortization	0	0
Total	0	0
Operating Segments | Jefferson Terminal
Intangible assets:
Total intangible assets, net	14,805	16,582
Intangible liabilities:
Acquired unfavorable lease intangibles	0	0
Less: Accumulated amortization	0	0
Acquired unfavorable lease intangibles, net	0	0
Operating Segments | Jefferson Terminal | Acquired favorable lease intangibles
Intangible assets:
Acquired favorable lease intangibles	0	0
Less: Accumulated amortization	0	0
Total	0	0
Operating Segments | Jefferson Terminal | Customer relationships
Intangible assets:
Acquired favorable lease intangibles	35,513	35,513
Less: Accumulated amortization	(20,708)	(18,931)
Total	$ 14,805	$ 16,582