Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenue
Revenues	$ 407	$ 153	$ 744	$ 4,317
Contract assets	0		0		$ 0
Contract liability	222		222		$ 433
Revenue, contract liabilities	200		400
Contracts and grants
Revenue
Revenues	407	153	714	4,288
Rockefeller University And Gilead Sciences | Contracts and grants
Revenue
Revenues	$ 0	$ 100	$ 200	$ 4,000