Capital provision assets - Capital Provision Income on the Consolidated Statement of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Income/(loss) on capital provision assets	$ 147,911	$ 73,716	$ (2,245,560)	$ 410,470
Foreign exchange gains/(losses)	(2,509)	267	(17,803)	2,372
Capital provision income/(loss)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net realized gains/(losses)	24,953	70,787	122,778	178,702
Fair value adjustment during the period, net of previously recognized unrealized gains/(losses) transferred to realized gains/(losses)	122,958	2,929	(2,368,338)	231,768
Income/(loss) on capital provision assets	147,911	73,716	(2,245,560)	410,470
Foreign exchange gains/(losses)	(1,354)	2,164	(7,201)	18,540
Net income/(loss) from due from settlement of capital provision assets	1,301	2,957	3,121	5,912
Other income/(loss)	(308)	1,231	(96)	826
Total capital provision income/(loss) as reported in the unaudited condensed consolidated statements of operations	$ 147,550	$ 80,068	$ (2,249,736)	$ 435,748

Income (Loss) On Derivative Assets

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Amount of net realized and unrealized gain (loss) on due from settlement of capital provision assets.

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Amount of interest and other income from capital provision assets.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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Amount of unrealized gain (loss) on investment.

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