SEGMENT INFORMATION - Reconciliation of Adjusted Net Income to Net Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 107,522	$ 61,028	$ 33,711
Add: Non-controlling share of Adjusted EBITDA	21,515	16,279	12,508
Equity in losses of unconsolidated entities	(24,707)	(67,399)	(13,499)
Less: Interest and other costs on pension and OPEB liabilities	(2,130)	(1,232)	(445)
Dividends and accretion of redeemable preferred stock	(62,400)	(23,657)	0
Less: Dividends and accretion of redeemable preferred stock	(20,209)	(13,939)	(29,095)
Less: Pro-rata share of Adjusted EBITDA from unconsolidated entities	(99,603)	(53,239)	(16,019)
Less: Depreciation and amortization expense	(81,541)	(70,749)	(54,016)
Less: Incentive allocations	0	0	0
Less: Incentive allocations	(743)	0	0
Less: Asset impairment charges	(1,125)	1,125	2,220
Less: Changes in fair value of non-hedge derivative instruments	(2,036)	0	0
Less: Losses on the modification or extinguishment of debt and capital lease obligations	(4,140)	(16,844)	(14,826)
Less: Acquisition and transaction expenses	(9,199)	(4,146)	(4,038)
Provision for (benefit from) income taxes	(2,470)	(4,468)	3,630
Net income (loss) attributable to stockholders and Former Parent	(183,736)	(177,241)	(79,869)
Other Nonrecurring (Income) Expense	(2,470)	0	0
Operating Segments | Railroad
Segment Reporting Information [Line Items]
Adjusted EBITDA	78,521	64,286	26,449
Equity in losses of unconsolidated entities	0	0	0
Less: Incentive allocations	(743)
Less: Losses on the modification or extinguishment of debt and capital lease obligations	(737)	(763)	(2,841)
Provision for (benefit from) income taxes	561	(1,287)	(64)
Net income (loss) attributable to stockholders and Former Parent	49,999	39,122	14,088
Operating Segments | Jefferson Terminal
Segment Reporting Information [Line Items]
Adjusted EBITDA	35,694	18,490	10,631
Equity in losses of unconsolidated entities	0	0	0
Less: Incentive allocations	0
Less: Losses on the modification or extinguishment of debt and capital lease obligations	(1,370)	(64)	0
Provision for (benefit from) income taxes	(2,468)	(3,016)	(229)
Net income (loss) attributable to stockholders and Former Parent	(36,720)	(35,623)	(31,433)
Operating Segments | Repauno
Segment Reporting Information [Line Items]
Adjusted EBITDA	(8,061)	(12,743)	(4,149)
Equity in losses of unconsolidated entities	0	0	0
Less: Incentive allocations	0
Less: Losses on the modification or extinguishment of debt and capital lease obligations	0	0	0
Provision for (benefit from) income taxes	(496)	(165)	0
Net income (loss) attributable to stockholders and Former Parent	(22,489)	(22,790)	(12,648)
Operating Segments | Power and Gas
Segment Reporting Information [Line Items]
Adjusted EBITDA	34,784	18,039	25,524
Operating Segments | Sustainability and Energy Transition
Segment Reporting Information [Line Items]
Adjusted EBITDA	(7,253)	(2,334)	(372)
Equity in losses of unconsolidated entities	(14,814)	(7,012)	(372)
Less: Incentive allocations	0
Less: Losses on the modification or extinguishment of debt and capital lease obligations	(1)	(280)	0
Provision for (benefit from) income taxes	0	0	0
Net income (loss) attributable to stockholders and Former Parent	(12,315)	(5,179)	(372)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Adjusted EBITDA	(26,163)	(24,710)	(24,372)
Equity in losses of unconsolidated entities	56	151	470
Less: Incentive allocations	0
Less: Losses on the modification or extinguishment of debt and capital lease obligations	(1,938)	(15,279)	(11,985)
Provision for (benefit from) income taxes	(67)	0	(7)
Net income (loss) attributable to stockholders and Former Parent	$ (156,962)	$ (91,473)	$ (35,956)