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License and Collaboration Revenue (Details) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended			6 Months Ended
	Jan. 31, 2025	Oct. 31, 2024	Aug. 31, 2023	Jun. 30, 2026	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2026	Jun. 30, 2025
License and Collaboration Revenue
Revenue				$ 1,000			$ 1,000	$ 10,000
BMS Agreement
License and Collaboration Revenue
Amount of upfront cash payment received			$ 50,000
Maximum amount of payments receivable			79,500
Sales milestone payments receivable			$ 70,000
Amount receivable				800	$ 1,300		800	1,300
Reduction in research and development costs pertaining to reimbursed global development costs				800	1,300		1,900	3,000
Revenue				0	0		0	0
Tenacia Novation Agreement
License and Collaboration Revenue
Amount of upfront cash payment received		$ 5,000
Maximum amount of payments receivable		$ 85,000
Revenue				$ 1,000	$ 0		$ 1,000	$ 0
License Agreement with Zai Lab (Hong Kong) Limited
License and Collaboration Revenue
Amount of upfront cash payment received	$ 10,000
Maximum amount of payments receivable	117,000
Agreement transaction price						$ 10,000
Viridian Agreement
License and Collaboration Revenue
Development milestone expense payable	$ 21,000