Licensing and Other Arrangements - Affimed (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Licensing and other arrangements
Revenue from contracts with customers	$ 525	$ 525	$ 3,275	$ 544
License Agreement | Affimed
Licensing and other arrangements
Contract assets	0		0		$ 0
Contract liabilities	0		0		$ 0
Capitalized contract costs	0		0
Revenue from contracts with customers	$ 0	$ 0	$ 0	$ 0