Asset acquisitions - Atreca - Narratives (Details) - USD ($)	May 17, 2024	Jun. 30, 2024	Dec. 31, 2023
Asset acquisitions
Liabilities		$ 42,377,000	$ 28,658,000
Atreca
Asset acquisitions
Liabilities	$ 0
Total cost of acquisition	5,700,000
Upfront payment	5,500,000
Transaction costs	200,000
Atreca | Maximum
Asset acquisitions
Amount required to be paid under the agreement	$ 7,000,000.0