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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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License Revenues - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended
	Sep. 12, 2024	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2022	Dec. 31, 2025	Oct. 01, 2024	Sep. 11, 2023	Oct. 31, 2021	Sep. 30, 2020
Related Party Transaction [Line Items]
Common stock, Shares issued		54,798,338		54,798,338			43,223,090		11,021,248
Reverse stock split				Immediately prior to the effective time of the Reverse Merger, the Company effected a 1-for-16 reverse stock split of its common stock (the “Reverse Stock Split”). Unless noted otherwise, all references herein to share and per share amounts reflect the Reverse Stock Split.
Accounts receivable		$ 106,000		$ 106,000			$ 52,000
Deferred revenue current		1,524,000		1,524,000			1,188,000
Deferred revenue noncurrent		5,944,000		5,944,000			5,770,000
Zenas BioPharma Inc [Member]
Related Party Transaction [Line Items]
Reimbursement of development costs						$ 1,100,000
Common stock, Shares issued											156,848
Zenas BioPharma Inc [Member] \| IPO [Member]
Related Party Transaction [Line Items]
Price per share	$ 17
Reverse stock split	1-for-8.6831
Fair value of the investment		500,000		500,000			700,000
Zenas BioPharma Inc [Member] \| Milestone [Member]
Related Party Transaction [Line Items]
Development milestones						11,000,000
Zenas BioPharma Inc [Member] \| Royalty [Member]
Related Party Transaction [Line Items]
License revenue - related party				0
Zenas BioPharma Inc [Member] \| Upfront Payment [Member]
Related Party Transaction [Line Items]
Upfront payments						$ 1,000,000				$ 1,000,000
Tenacia Biotechnology (Hong Kong) Co., Limited [Member]
Related Party Transaction [Line Items]
License revenue - related party		800,000	$ 200,000	1,200,000	$ 1,400,000
Accounts receivable		100,000		100,000			52,000
Unbilled receivable		200,000		200,000			50,000
Deferred revenue current		1,500,000		1,500,000			1,200,000
Deferred revenue noncurrent		5,900,000		5,900,000			$ 5,800,000
Tenacia Biotechnology (Hong Kong) Co., Limited [Member] \| Milestone [Member]
Related Party Transaction [Line Items]
Development milestones		$ 15,000,000		15,000,000				$ 15,000,000
Revenue related to milestones				$ 7,000,000
Collaborative Arrangement, Revenue Not from Contract with Customer, Statement of Income or Comprehensive Income [Extensible Enumeration]				License revenue - related party
Tenacia Biotechnology (Hong Kong) Co., Limited [Member] \| Upfront Payment [Member]
Related Party Transaction [Line Items]
Upfront payments								$ 2,500,000