Fair value measurements (Tables)

3 Months Ended

Mar. 31, 2026

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Measured at Fair Value on Recurring Basis

As of March 31, 2026, financial instruments measured at fair value on a recurring basis are summarized below:

	Level 1	Level 2	Fair value measurements
	(in $ thousands)
Investments in securities:
Debt securities:
Municipal	—	9,870	9,870
Corporate	—	143,285	143,285
Foreign	—	339,350	339,350
U.S. Treasury Bonds	—	58,656	58,656
Equity securities	51,324	—	51,324
	51,324	551,161	602,485

As of December 31, 2025, financial instruments measured at fair value on a recurring basis are summarized below:

	Level 1	Level 2	Fair value measurements
	(in $ thousands)
Investments in securities:
Debt securities:
Municipal	—	12,274	12,274
Corporate	—	143,621	143,621
Foreign	—	348,084	348,084
U.S. Treasury Bonds	—	54,509	54,509
Equity securities	47,682	—	47,682
	47,682	558,488	606,170