Related Party Transactions - Equity method investments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Loan	$ 4,267
Mezzanine equity	34
Interest income	17,671	$ 20,265
Share of net loss of equity method investee	(133)
Dahae Energy Co., Ltd \| Equity method investee
Related Party Transaction [Line Items]
Bond	3,105
Loan	1,161
Warrants	607
Equity Method Investment	520
Mezzanine equity	34
Investment portion of loss	(111)
Interest income	105
Share of net loss of equity method investee	133
Other comprehensive income	$ 25

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

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Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

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

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Amount, after tax, of other comprehensive income (loss) (OCI) for proportionate share of equity method investee's OCI.

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