Net investment income (Details) - Insurance Solutions - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Net Investment Income [Line Items]
Investment income	$ 67,381	$ 77,834
Investment expense	(3,958)	(3,196)
Net investment income	78,990	92,790
Consolidated Entity, Excluding Consolidated VIE
Net Investment Income [Line Items]
Net investment income	63,423	74,638
Variable Interest Entity, Primary Beneficiary
Net Investment Income [Line Items]
Investment income	16,237	18,767
Investment expense	(670)	(615)
Net investment income	15,567	18,152
Debt securities
Net Investment Income [Line Items]
Investment income	45,499	54,253
Corporate loans
Net Investment Income [Line Items]
Investment income	13,309	8,985
Derivatives
Net Investment Income [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(1,230)	0
Mortgage loans
Net Investment Income [Line Items]
Investment income	7,564	9,091
Equity securities
Net Investment Income [Line Items]
Investment income	683	1,765
Other
Net Investment Income [Line Items]
Investment income	$ 1,556	$ 3,740

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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