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License and Collaboration Revenue and Other Funding Agreements - Schedule of Contract Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
License and collaborations revenue | $ 755 | $ 2,882 | $ 2,912 | $ 7,252
Viatris License Agreement |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Balance as of beginning of period |  |  | 1,170 | 2,209
License and collaborations revenue | 800 | 2,900 | 2,912 | 7,252
Balance as of end of period | $ 415 | $ 1,178 | 415 | 1,178
Viatris License Agreement | License Transfer Fee |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Reclassification to Accounts receivable related to costs billed under the Viatris License Agreement |  |  | $ (3,667) | $ (8,283)

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- Definition Amount, after allowance for credit loss, of right to consideration upon the completion of services to customer when right is conditioned on something other than passage of time, classified as current. + References No definition available. + Details
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