Segment Reporting (Details) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Jun. 30, 2026 USD ($) segment	Jun. 30, 2025 USD ($) segment
Segment Reporting
Number of reportable segments | segment					1	1
Interest income	$ (172)		$ (377)		$ (419)	$ (652)
Net (loss) income	(6,457)	$ (6,804)	4,167	$ (9,579)	(13,261)	(5,412)
Operating segment | Single reportable segment
Segment Reporting
General and administrative expense, personnel costs	933		1,038		1,865	1,647
General and administrative expense, other general and administrative expenses	1,694		2,025		2,902	2,659
Interest income	(172)		(377)		(419)	(652)
Other income, net			(12,659)			(7,159)
Operating segment | HCC | Single reportable segment
Segment Reporting
Direct research and development expenses by program	1,118		967		1,818	1,404
Operating segment | IPF | Single reportable segment
Segment Reporting
Direct research and development expenses by program	137		2,830		137	3,863
Operating segment | mBC | Single reportable segment
Segment Reporting
Direct research and development expenses by program	(5)		(268)		(5)	(268)
Operating segment | Pre-clinical, CMC, and other (unallocated) | Single reportable segment
Segment Reporting
Direct research and development expenses by program	105		140		192	315
Operating segment | TTI 109 | Single reportable segment
Segment Reporting
Direct research and development expenses by program	1,362		822		4,264	1,180
Operating segment | Unallocated Research and Development | Single reportable segment
Segment Reporting
Unallocated research and development expense, personnel costs	926		917		1,930	1,775
Unallocated research and development expense, consultant fees and other costs	$ 359		$ 398		$ 577	$ 648