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
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+ Details

Related Party Transactions (Details) $ in Thousands	6 Months Ended
Related Party Transactions (Details) $ in Thousands	Jun. 30, 2026 USD ($) director	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2021 director
Related Party Transaction [Line Items]
Number of directors \| director	1				1
Liability related to future royalties and milestones	$ 284,300		$ 280,200
Revenue share payments	4,206	$ 768
Blackstone
Related Party Transaction [Line Items]
Liability related to future royalties and milestones	240,900		236,700	$ 35,000
Liability related to future royalties and milestones, aggregated cumulative catch-up adjustment	6,900		27,900
Revenue share payments	$ 2,700
Blackstone \| Autolus
Related Party Transaction [Line Items]
Ownership percentage by noncontrolling owners (more than)	5.00%				10.00%
BioNTech
Related Party Transaction [Line Items]
Liability related to future royalties and milestones	$ 43,400		43,500
Liability related to future royalties and milestones, aggregated cumulative catch-up adjustment	1,400		$ 8,500
Revenue share payments	$ 1,500
BioNTech \| Autolus
Related Party Transaction [Line Items]
Ownership percentage by noncontrolling owners (more than)	10.00%