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INVESTMENTS - Share of Equity of Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Schedule of Equity Method Investments [Line Items]
Equity in (losses) earnings of unconsolidated entities	$ (11,902)	$ 4,366
Intermodal Finance I, Ltd.
Schedule of Equity Method Investments [Line Items]
Equity in (losses) earnings of unconsolidated entities	9	21
Long Ridge Energy & Power LLC
Schedule of Equity Method Investments [Line Items]
Equity in (losses) earnings of unconsolidated entities	(6,675)	7,761
GM-FTAI Holdco LLC
Schedule of Equity Method Investments [Line Items]
Equity in (losses) earnings of unconsolidated entities	(4,486)	(2,341)
Clean Planet Energy USA LLC
Schedule of Equity Method Investments [Line Items]
Equity in (losses) earnings of unconsolidated entities	(388)	(1,075)
Long Ridge West Virginia LLC
Schedule of Equity Method Investments [Line Items]
Equity in (losses) earnings of unconsolidated entities	$ (362)	$ 0

X

- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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