Summary of significant accounting policies (Details 2) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Accounting Policies [Abstract]
Interest income	$ 277	$ 419
Accretion of discount on marketable securities, net	137	214
Total interest income	$ 414	$ 633

Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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+ Details