Strategic transactions and agreements - Other asset acquisitions and license agreements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
In-process research and development		$ 111,954
Other asset acquisitions and license agreements
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accrued expenses and other current liabilities			$ 1,200
In-process research and development	$ 0	$ 0