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MANAGEMENT AGREEMENT AND AFFILIATE TRANSACTIONS (Details) - USD ($) shares in Millions		3 Months Ended		6 Months Ended
	Jun. 21, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 20, 2018
Related Party Transaction [Line Items]
Ownership percentage by manager				0.05%
Management fees and incentive allocation to affiliate		$ 4,756,000	$ 5,710,000	$ 9,522,000	$ 9,548,000
Shares issued, conversion of shares (in shares)	1.9
Jefferson Terminal
Related Party Transaction [Line Items]
Non-controlling interest ownership percentage	20.00%	20.00%		20.00%		20.00%
Non-controlling interest by private equity fund		$ 25,000,000.0		$ 25,000,000.0		$ 33,700,000
Non-controlling interest share of net loss		4,020,000	4,559,000	$ 8,681,000	7,855,000
Manager \| Management fees
Related Party Transaction [Line Items]
Management fee percentage rate				1.50%
Due from related party		0		$ 0		0
Manager \| Bond Purchase Agreement Guarantee Fees
Related Party Transaction [Line Items]
Amounts of transaction				1,700,000
Management fee payable							$ 300,000
General Partner
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate		4,756,000	5,710,000	9,522,000	9,548,000
Management fees and incentive allocation to affiliate		2,651,000	5,328,000	5,437,000	9,332,000
General Partner \| Aviation Leasing
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate			1,716,000		3,229,000
General Partner \| Aviation Leasing \| Operating expense
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate			746,000		1,294,000
General Partner \| Aviation Leasing \| Acquisition and transaction expenses
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate			970,000		1,935,000
General Partner \| Management fees
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate		4,756,000	3,499,000	9,522,000	7,175,000
General Partner \| Income incentive allocation
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate		0	0	0	0
General Partner \| Capital gains incentive allocation
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate		0	2,211,000	0	2,373,000
General Partner \| General and administrative
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate		2,128,000	3,019,000	4,390,000	5,562,000
General Partner \| Acquisition and transaction expenses
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate		523,000	$ 2,309,000	1,047,000	$ 3,770,000
Accounts Payable and Accrued Liabilities \| Manager
Related Party Transaction [Line Items]
Accrued management fees		1,548,000		1,548,000		1,410,000
Other payables (1)		$ 866,000		$ 866,000		21,992,000
Accounts Payable and Accrued Liabilities \| Manager \| Incentive Fees
Related Party Transaction [Line Items]
Other payables (1)						$ 21,200,000
Threshold 1 \| Fortress Worldwide Transportation and Infrastructure Master GP LLP \| Income incentive allocation
Related Party Transaction [Line Items]
Pre-incentive income allocation				0.00%
Quarterly percent threshold of pre-incentive allocation net income				2.00%
Annual percent threshold of pre-incentive allocation net income				8.00%
Threshold 2 \| Fortress Worldwide Transportation and Infrastructure Master GP LLP \| Income incentive allocation
Related Party Transaction [Line Items]
Pre-incentive income allocation				100.00%
Threshold 2 \| Fortress Worldwide Transportation and Infrastructure Master GP LLP \| Income incentive allocation \| Minimum
Related Party Transaction [Line Items]
Quarterly percent threshold of pre-incentive allocation net income				2.00%
Threshold 2 \| Fortress Worldwide Transportation and Infrastructure Master GP LLP \| Income incentive allocation \| Maximum
Related Party Transaction [Line Items]
Quarterly percent threshold of pre-incentive allocation net income				2.2223%
Threshold 3 \| Fortress Worldwide Transportation and Infrastructure Master GP LLP \| Income incentive allocation
Related Party Transaction [Line Items]
Pre-incentive income allocation				10.00%