Shareholders' equity (Details) € / shares in Units, $ in Thousands	Sep. 30, 2024 USD ($) shares	Sep. 30, 2024 EUR (€) € / shares shares	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Class of Stock [Line Items]
Share capital | $	$ 54,034		$ 79,095	$ 111,654	$ 140,187	$ 143,991	$ 164,240	$ 179,094	$ 194,453
Nominal value (in € per share) | € / shares		€ 0.10
Share capital
Class of Stock [Line Items]
Share capital	$ 10,979	€ 9,650,153
Share capital authorized (in shares) | shares	96,501,526	96,501,526