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Distribution of shares to shareholders at separation.

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Maximum additional cash amount per share.

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Proceeds from cash distributions from parent.

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Amount of cash and cash equivalent acquired in business combination and recognized at acquisition date.

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Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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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.

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Date of distribution for distribution of cash or unit to member of limited liability company (LLC), in YYYY-MM-DD format.

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The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

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Organization and Description of Business - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Aug. 20, 2025	Apr. 14, 2025	Nov. 15, 2023	Nov. 14, 2023	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cash and cash equivalents					$ 58,871	$ 115,462	$ 111,018
XOMA Royalty Corporation
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Base cash price per share	$ 2.035
Estimated closing net cash	$ 36,200
Maximum additional cash amount per share	$ 0.205
Discontinue of Clinical Development
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Percentage of positions reduced		90.00%
Alkermes
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Effective time of distribution				Nov. 15, 2023
Cash distribution received from parent				$ 275,000
Distribution term of shares			one ordinary share of the Company for every ten ordinary shares