SEGMENT INFORMATION - Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total assets	$ 2,638,778	$ 1,955,806
Debt, net	1,237,347	703,264
Total liabilities	1,584,996	920,731
Equity
Non-controlling interest in equity of consolidated subsidiaries	56,383	88,007
Total equity	1,053,782	1,035,075	$ 1,165,680	$ 1,290,686
Total liabilities and equity	2,638,778	1,955,806
Operating Segments | Equipment Leasing | Aviation Leasing
Segment Reporting Information [Line Items]
Total assets	1,367,074	952,543
Debt, net	0	0
Total liabilities	234,449	145,882
Equity
Non-controlling interest in equity of consolidated subsidiaries	0	3,037
Total equity	1,132,625	806,661
Total liabilities and equity	1,367,074	952,543
Operating Segments | Equipment Leasing | Offshore Energy
Segment Reporting Information [Line Items]
Total assets	192,729	195,101
Debt, net	47,570	53,590
Total liabilities	51,125	56,853
Equity
Non-controlling interest in equity of consolidated subsidiaries	0	0
Total equity	141,604	138,248
Total liabilities and equity	192,729	195,101
Operating Segments | Equipment Leasing | Shipping Containers
Segment Reporting Information [Line Items]
Total assets	2,360	4,429
Debt, net	0	0
Total liabilities	6	100
Equity
Non-controlling interest in equity of consolidated subsidiaries	0	0
Total equity	2,354	4,329
Total liabilities and equity	2,360	4,429
Operating Segments | Infrastructure revenues | Jefferson Terminal
Segment Reporting Information [Line Items]
Total assets	670,682	579,329
Debt, net	234,862	184,942
Total liabilities	288,256	210,159
Equity
Non-controlling interest in equity of consolidated subsidiaries	52,058	81,414
Total equity	382,426	369,170
Total liabilities and equity	670,682	579,329
Operating Segments | Infrastructure revenues | Railroad
Segment Reporting Information [Line Items]
Total assets	64,286	51,989
Debt, net	22,239	22,513
Total liabilities	37,207	36,560
Equity
Non-controlling interest in equity of consolidated subsidiaries	3,258	2,737
Total equity	27,079	15,429
Total liabilities and equity	64,286	51,989
Operating Segments | Infrastructure revenues | Ports and Terminals
Segment Reporting Information [Line Items]
Total assets	277,160	123,693
Debt, net	0	0
Total liabilities	16,615	14,229
Equity
Non-controlling interest in equity of consolidated subsidiaries	544	295
Total equity	260,545	109,464
Total liabilities and equity	277,160	123,693
Corporate
Segment Reporting Information [Line Items]
Total assets	64,487	48,722
Debt, net	932,676	442,219
Total liabilities	957,338	456,948
Equity
Non-controlling interest in equity of consolidated subsidiaries	523	524
Total equity	(892,851)	(408,226)
Total liabilities and equity	$ 64,487	$ 48,722