REVENUES - Components of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Total revenues	$ 94,309	$ 149,848	$ 207,149	$ 264,742
Corporate and Other
Disaggregation of Revenue [Line Items]
Total revenues	5,969	5,039	10,762	7,854
Total equipment leasing revenues
Disaggregation of Revenue [Line Items]
Total revenues	79,834	79,200	166,283	151,652
Total equipment leasing revenues | Corporate and Other
Disaggregation of Revenue [Line Items]
Total revenues	4,575	4,219	8,032	6,260
Total infrastructure revenues
Disaggregation of Revenue [Line Items]
Total revenues	14,475	70,648	40,866	113,090
Total infrastructure revenues | Corporate and Other
Disaggregation of Revenue [Line Items]
Total revenues	1,394	820	2,730	1,594
Equipment Leasing | Lease income
Disaggregation of Revenue [Line Items]
Total revenues	44,634	51,888	94,447	101,124
Equipment Leasing | Maintenance revenue
Disaggregation of Revenue [Line Items]
Total revenues	27,105	25,369	59,100	47,146
Equipment Leasing | Finance lease income
Disaggregation of Revenue [Line Items]
Total revenues	413	881	842	1,707
Equipment Leasing | Other revenue
Disaggregation of Revenue [Line Items]
Total revenues	7,682	1,062	11,894	1,675
Equipment Leasing | Total equipment leasing revenues
Disaggregation of Revenue [Line Items]
Total revenues	79,834	79,200	166,283	151,652
Infrastructure | Lease income
Disaggregation of Revenue [Line Items]
Total revenues	287	1,086	407	1,749
Infrastructure | Terminal services revenues
Disaggregation of Revenue [Line Items]
Total revenues	12,794	8,565	29,205	15,250
Infrastructure | Crude marketing revenues
Disaggregation of Revenue [Line Items]
Total revenues	0	59,204	8,210	89,983
Infrastructure | Other revenue
Disaggregation of Revenue [Line Items]
Total revenues	1,394	1,793	3,044	6,108
Infrastructure | Total infrastructure revenues
Disaggregation of Revenue [Line Items]
Total revenues	14,475	70,648	40,866	113,090
Aviation Leasing | Equipment Leasing
Disaggregation of Revenue [Line Items]
Total revenues	75,259	74,981	158,251	145,392
Aviation Leasing | Equipment Leasing | Lease income
Disaggregation of Revenue [Line Items]
Total revenues	42,505	48,731	89,446	96,034
Aviation Leasing | Equipment Leasing | Maintenance revenue
Disaggregation of Revenue [Line Items]
Total revenues	27,105	25,369	59,100	47,146
Aviation Leasing | Equipment Leasing | Finance lease income
Disaggregation of Revenue [Line Items]
Total revenues	413	881	842	1,707
Aviation Leasing | Equipment Leasing | Other revenue
Disaggregation of Revenue [Line Items]
Total revenues	5,236	0	8,863	505
Aviation Leasing | Equipment Leasing | Total equipment leasing revenues
Disaggregation of Revenue [Line Items]
Total revenues	75,259	74,981	158,251	145,392
Jefferson Terminal | Infrastructure
Disaggregation of Revenue [Line Items]
Total revenues	13,081	67,562	37,822	103,516
Jefferson Terminal | Infrastructure | Lease income
Disaggregation of Revenue [Line Items]
Total revenues	287	821	407	1,129
Jefferson Terminal | Infrastructure | Terminal services revenues
Disaggregation of Revenue [Line Items]
Total revenues	12,794	7,537	29,205	12,404
Jefferson Terminal | Infrastructure | Crude marketing revenues
Disaggregation of Revenue [Line Items]
Total revenues	0	59,204	8,210	89,983
Jefferson Terminal | Infrastructure | Total infrastructure revenues
Disaggregation of Revenue [Line Items]
Total revenues	13,081	67,562	37,822	103,516
Ports and Terminals | Infrastructure
Disaggregation of Revenue [Line Items]
Total revenues	0	2,266	314	7,980
Ports and Terminals | Infrastructure | Lease income
Disaggregation of Revenue [Line Items]
Total revenues		265	0	620
Ports and Terminals | Infrastructure | Terminal services revenues
Disaggregation of Revenue [Line Items]
Total revenues		1,028	0	2,846
Ports and Terminals | Infrastructure | Other revenue
Disaggregation of Revenue [Line Items]
Total revenues	0	973	314	4,514
Ports and Terminals | Infrastructure | Total infrastructure revenues
Disaggregation of Revenue [Line Items]
Total revenues	0	2,266	314	7,980
Corporate and Other
Disaggregation of Revenue [Line Items]
Total revenues	5,969	5,039	10,762	7,854
Corporate and Other | Lease income
Disaggregation of Revenue [Line Items]
Total revenues	2,129	3,157	5,001	5,090
Corporate and Other | Other revenue
Disaggregation of Revenue [Line Items]
Total revenues	2,446	1,062	3,031	1,170
Corporate and Other | Total equipment leasing revenues
Disaggregation of Revenue [Line Items]
Total revenues	$ 4,575	$ 4,219	$ 8,032	$ 6,260