SEGMENT INFORMATION - Reconciliation of Adjusted Net Income to Net Income (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Adjusted Net Income (Loss)	$ (6,532,000)	$ 6,923,000
Add: Non-controlling share of adjustments to Adjusted Net Income	(989,000)	354,000
Equity in earnings of unconsolidated entities	85,000	1,241,000
Add: Cash payments for income taxes	351,000	197,000
Less: Incentive allocations	0
Less: Pro-rata share of Adjusted Net Income from investments in unconsolidated entities	(85,000)	(1,241,000)
Less: Asset impairment charges	0	0
Less: Changes in fair value of non-hedge derivative instruments	(3,000)	(8,000)
Less: Losses on the modification or extinguishment of debt and capital lease obligations	(1,579,000)	0
Less: Acquisition and transaction expenses	(1,059,000)	(368,000)
Less: Equity-based compensation expense	3,963,000	(1,420,000)
Less: Provision for income taxes	66,000	(230,000)
Net (loss) income attributable to shareholders	(5,782,000)	5,448,000
Operating Segments | Reportable Subsegments | Equipment Leasing | Aviation Leasing
Segment Reporting Information [Line Items]
Adjusted Net Income (Loss)	10,475,000	8,462,000
Equity in earnings of unconsolidated entities	0	0
Less: Acquisition and transaction expenses	0	0
Less: Provision for income taxes	97,000	(214,000)
Net (loss) income attributable to shareholders	10,918,000	8,445,000
Operating Segments | Reportable Subsegments | Equipment Leasing | Offshore Energy
Segment Reporting Information [Line Items]
Adjusted Net Income (Loss)	(5,390,000)	3,809,000
Equity in earnings of unconsolidated entities	0	0
Less: Acquisition and transaction expenses	0	0
Less: Provision for income taxes	0	0
Net (loss) income attributable to shareholders	(5,390,000)	3,809,000
Operating Segments | Reportable Subsegments | Equipment Leasing | Shipping Containers
Segment Reporting Information [Line Items]
Adjusted Net Income (Loss)	1,087,000	2,473,000
Equity in earnings of unconsolidated entities	85,000	1,241,000
Less: Acquisition and transaction expenses	0	0
Less: Provision for income taxes	4,000	(16,000)
Net (loss) income attributable to shareholders	1,088,000	2,449,000
Operating Segments | Reportable Subsegments | Infrastructure | Jefferson Terminal
Segment Reporting Information [Line Items]
Adjusted Net Income (Loss)	(6,257,000)	(4,215,000)
Equity in earnings of unconsolidated entities	0	0
Less: Acquisition and transaction expenses	0	0
Less: Provision for income taxes	(35,000)	0
Net (loss) income attributable to shareholders	(4,699,000)	(4,727,000)
Operating Segments | Reportable Subsegments | Infrastructure | Railroad
Segment Reporting Information [Line Items]
Adjusted Net Income (Loss)	491,000	(844,000)
Equity in earnings of unconsolidated entities	0	0
Less: Acquisition and transaction expenses	0	0
Less: Provision for income taxes	0	0
Net (loss) income attributable to shareholders	294,000	(1,398,000)
Corporate
Segment Reporting Information [Line Items]
Adjusted Net Income (Loss)	(6,938,000)	(2,762,000)
Equity in earnings of unconsolidated entities	0	0
Less: Acquisition and transaction expenses	(1,059,000)	(368,000)
Less: Provision for income taxes	0	0
Net (loss) income attributable to shareholders	$ (7,993,000)	$ (3,130,000)