Net realized and unrealized gains (Tables)

3 Months Ended

Mar. 31, 2026

Investments, Debt and Equity Securities [Abstract]

Schedule of Gross Realized and Unrealized Gains and Losses

Realized and unrealized gains and losses are detailed as follows:

	Three Months Ended   March 31,
	2026	2025
	(in $ thousands)
Realized gains	2	556
Realized losses	(446)	(678)
Net unrealized investment gains recognized on equity securities still held	3,346	3,175
	2,902	3,053

Schedule of Net Investment Gains and Losses

Investment gains and losses recognized related to investments in equity securities are as follows:

	Three Months Ended   March 31,
	2026	2025
	(in $ thousands)
Net investment gains recognized on equity securities during the period	3,345	2,854
Less: Net realized losses on equity securities sold during the period	(1)	(321)
Net unrealized investment gains recognized on equity securities still held	3,346	3,175

Schedule of Proceeds from Sale of Investments in Securities

The amortized costs and fair values of investments in debt securities are as follows:

	March 31, 2026		December 31, 2025
	Amortized costs	Fair values	Amortized costs	Fair values
	(in $ thousands)
Municipal	9,878	9,870	12,292	12,274
Corporate	145,789	143,285	144,571	143,621
Foreign	340,382	339,350	347,588	348,084
U.S. Treasury Bonds	58,726	58,656	54,093	54,509
	554,775	551,161	558,544	558,488

Proceeds from sales of investments in securities are as follows:

	Three Months Ended   March 31,
	2026	2025
	(in $ thousands)
Proceeds from sales of debt securities	939	12,544
Proceeds from sales of equity securities	67	3,465
Total proceeds from sales of investments in securities	1,006	16,009