SEGMENT INFORMATION - Statement of Income by Segment (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues
Revenue		$ 320,472	$ 261,966	$ 120,219
Expenses
Operating expenses		253,672	208,157	98,541
General and administrative		12,833	10,891	8,737
Acquisition and transaction expenses		4,140	16,844	14,826
Depreciation and amortization		80,992	70,749	54,016
Asset impairment		743	0	0
Total expenses		364,847	319,605	191,758
Other income (expense)
Equity in losses of unconsolidated entities		(24,707)	(67,399)	(13,499)
Loss on sale of assets, net		6,855	(1,603)	16
Loss on extinguishment of debt	$ 1,100	(2,036)	0	0
Interest expense		(99,603)	(53,239)	(16,019)
Other income (expense)		6,586	(3,169)	(8,930)
Total other expense		(112,905)	(125,410)	(38,432)
Income (loss) before income taxes		(157,280)	(183,049)	(109,971)
Provision for (benefit from) income taxes		2,470	4,468	(3,630)
Net (loss) income from continuing operations		(159,750)	(187,517)	(106,341)
Less: Net loss attributable to non-controlling interests in consolidated subsidiaries		(38,414)	(33,933)	(26,472)
Less: Dividends and accretion of redeemable preferred stock		62,400	23,657
Net income (loss) attributable to stockholders and Former Parent		(183,736)	(177,241)	(79,869)
Interest expense		99,603	53,239	16,019
Management fee		12,467	12,964	15,638
Operating Segments | Infrastructure [Member]
Other income (expense)
Loss on extinguishment of debt		0
Operating Segments | Railroad
Revenues
Revenue		169,445	149,661	62,250
Expenses
Operating expenses		92,972	84,863	35,824
General and administrative		0	0	0
Acquisition and transaction expenses		737	763	2,841
Depreciation and amortization		19,590	20,164	8,951
Asset impairment		743
Total expenses		114,042	105,790	47,616
Other income (expense)
Equity in losses of unconsolidated entities		0	0	0
Loss on sale of assets, net		(437)	(1,603)	0
Loss on extinguishment of debt		900
Interest expense		(2,284)	(212)	(60)
Other income (expense)		(2,164)	(1,632)	(422)
Total other expense		(5,822)	(3,447)	(482)
Income (loss) before income taxes		49,581	40,424	14,152
Provision for (benefit from) income taxes		(561)	1,287	64
Net (loss) income from continuing operations		50,142	39,137	14,088
Less: Net loss attributable to non-controlling interests in consolidated subsidiaries		143	15	0
Less: Dividends and accretion of redeemable preferred stock		0	0
Net income (loss) attributable to stockholders and Former Parent		49,999	39,122	14,088
Management fee		0	0	0
Operating Segments | Railroad | Infrastructure [Member]
Other income (expense)
Loss on extinguishment of debt		(937)
Operating Segments | Jefferson Terminal
Revenues
Revenue		72,146	60,289	46,352
Expenses
Operating expenses		66,576	56,417	48,255
General and administrative		0	0	0
Acquisition and transaction expenses		1,370	64	0
Depreciation and amortization		48,916	39,318	36,013
Asset impairment		0
Total expenses		116,862	95,799	84,268
Other income (expense)
Equity in losses of unconsolidated entities		0	0	0
Loss on sale of assets, net		7,292	0	0
Interest expense		(32,443)	(24,798)	(14,812)
Other income (expense)		(1,302)	(4,317)	(4,726)
Total other expense		(26,453)	(29,115)	(19,538)
Income (loss) before income taxes		(71,169)	(64,625)	(57,454)
Provision for (benefit from) income taxes		2,468	3,016	229
Net (loss) income from continuing operations		(73,637)	(67,641)	(57,683)
Less: Net loss attributable to non-controlling interests in consolidated subsidiaries		(36,917)	(32,018)	(26,250)
Less: Dividends and accretion of redeemable preferred stock		0	0
Net income (loss) attributable to stockholders and Former Parent		(36,720)	(35,623)	(31,433)
Management fee		0	0	0
Operating Segments | Repauno
Revenues
Revenue		10,691	4,117	11,617
Expenses
Operating expenses		22,203	17,072	14,304
General and administrative		0	0	0
Acquisition and transaction expenses		0	0	0
Depreciation and amortization		9,336	9,322	9,052
Asset impairment		0
Total expenses		31,539	26,394	23,356
Other income (expense)
Equity in losses of unconsolidated entities		0	0	0
Loss on sale of assets, net		0	0	16
Interest expense		(2,557)	(1,590)	(1,147)
Other income (expense)		0	0	0
Total other expense		(2,557)	(1,590)	(1,131)
Income (loss) before income taxes		(23,405)	(23,867)	(12,870)
Provision for (benefit from) income taxes		496	165	0
Net (loss) income from continuing operations		(23,901)	(24,032)	(12,870)
Less: Net loss attributable to non-controlling interests in consolidated subsidiaries		(1,412)	(1,242)	(222)
Less: Dividends and accretion of redeemable preferred stock		0	0
Net income (loss) attributable to stockholders and Former Parent		(22,489)	(22,790)	(12,648)
Management fee		0	0	0
Operating Segments | Power and Gas
Revenues
Revenue		0	0	0
Expenses
Operating expenses		2,726	826	99
General and administrative		0	0	0
Acquisition and transaction expenses		94	458	0
Depreciation and amortization		0	0	0
Asset impairment		0
Total expenses		2,820	1,284	99
Other income (expense)
Equity in losses of unconsolidated entities		(9,949)	(60,538)	(13,597)
Loss on sale of assets, net		0	0	0
Interest expense		(3)	0	0
Other income (expense)		7,523	524	(3,782)
Total other expense		(2,429)	(60,014)	(17,379)
Income (loss) before income taxes		(5,249)	(61,298)	(17,478)
Provision for (benefit from) income taxes		0	0	(3,930)
Net (loss) income from continuing operations		(5,249)	(61,298)	(13,548)
Less: Net loss attributable to non-controlling interests in consolidated subsidiaries		0	0	0
Less: Dividends and accretion of redeemable preferred stock		0	0
Net income (loss) attributable to stockholders and Former Parent		(5,249)	(61,298)	(13,548)
Management fee		0	0	0
Operating Segments | Sustainability and Energy Transition
Revenues
Revenue		0	0	0
Expenses
Operating expenses		29	10	0
General and administrative		0	0	0
Acquisition and transaction expenses		1	280	0
Depreciation and amortization		0	0	0
Asset impairment		0
Total expenses		30	290	0
Other income (expense)
Equity in losses of unconsolidated entities		(14,814)	(7,012)	(372)
Loss on sale of assets, net		0	0	0
Interest expense		0	0	0
Other income (expense)		2,529	2,123	0
Total other expense		(12,285)	(4,889)	(372)
Income (loss) before income taxes		(12,315)	(5,179)	(372)
Provision for (benefit from) income taxes		0	0	0
Net (loss) income from continuing operations		(12,315)	(5,179)	(372)
Less: Net loss attributable to non-controlling interests in consolidated subsidiaries		0	0	0
Less: Dividends and accretion of redeemable preferred stock		0	0
Net income (loss) attributable to stockholders and Former Parent		(12,315)	(5,179)	(372)
Management fee		0	0	0
Operating Segments | Power and Gas | Infrastructure [Member]
Other income (expense)
Loss on extinguishment of debt		0
Corporate, Non-Segment
Revenues
Revenue		68,190	47,899	0
Expenses
Operating expenses		69,166	48,969	59
General and administrative		12,833	10,891	8,737
Acquisition and transaction expenses		1,938	15,279	11,985
Depreciation and amortization		3,150	1,945	0
Asset impairment		0
Total expenses		99,554	90,048	36,419
Other income (expense)
Equity in losses of unconsolidated entities		56	151	470
Loss on sale of assets, net		0	0	0
Loss on extinguishment of debt		(1,099)
Interest expense		(62,316)	(26,639)	0
Other income (expense)		0	133	0
Total other expense		(63,359)	(26,355)	470
Income (loss) before income taxes		(94,723)	(68,504)	(35,949)
Provision for (benefit from) income taxes		67	0	7
Net (loss) income from continuing operations		(94,790)	(68,504)	(35,956)
Less: Net loss attributable to non-controlling interests in consolidated subsidiaries		(228)	(688)	0
Less: Dividends and accretion of redeemable preferred stock		62,400	23,657
Net income (loss) attributable to stockholders and Former Parent		(156,962)	(91,473)	(35,956)
Management fee		$ 12,467	$ 12,964	$ 15,638