Collaborative, Licensing and Other Arrangements - Schedule of Financing Liability (Details) - Amgen, Inc - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Research and Development Arrangement, Contract to Perform for Others
Research and development cost share liability, current portion	$ 35,700	$ 64,345
Total research and development cost share liability	$ 35,700	$ 64,345

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 730
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483041/730-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 730
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483041/730-20-50-1

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