Concentrations of risk and geographic information - Schedule of Revenue by Geographic Segment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenues	$ 651,542	$ 801,473	$ 1,005,459
United States [Member]
Segment Reporting Information [Line Items]
Revenues	310,200	291,300	388,000
Americas [Member]
Segment Reporting Information [Line Items]
Revenues	383,481	378,934	469,675
Europe, Middle East and Africa [Member]
Segment Reporting Information [Line Items]
Revenues	190,809	258,976	290,814
Asia and Pacific Area Countries [Member]
Segment Reporting Information [Line Items]
Revenues	$ 77,252	$ 163,563	$ 244,970

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details