Asset management income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Asset management income/(loss)
Asset management income
Asset management income/(loss)	$ 277	$ 2,547	$ 850	$ 5,434
Management fee income
Asset management income
Asset management income/(loss)	277	1,347	850	4,234
Performance fee income
Asset management income
Asset management income/(loss)	$ 0	$ 1,200	$ 0	$ 1,200

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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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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