Collaboration agreements - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Contract liabilities
Balance at Beginning of Period	$ 125,314	$ 147,653
Additions	1,573	0
Deductions	9,247	3,302
Balance at End of Period	117,640	144,351
Amounts included in the contract liability at the beginning of the period	$ 9,245	$ 5,110