Summary of Significant Accounting Policies - Segment Reporting - Reconciliation of company's net income (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 07, 2025	Mar. 31, 2026	Mar. 31, 2025
Segment operating expenses:
Research and development		$ 2,034	$ 825
Change in fair value of contingent consideration		(4)	(3,488)
Total operating costs and expenses		5,933	462
Loss from operations		(5,933)	(462)
Other segment items:
Change in fair value of convertible notes		(8,727)	(1,631)
Change in fair value of warrants		(4,656)	(86,729)
Loss on issuance of warrants	$ (75,600)		(75,644)
Loss on extinguishment of debt		(76)
Loss on derivative liability		(1,743)
Other income, net		30	103
Total other (loss) income, net		(5,860)	9,557
(Loss) income before taxes		(11,793)	9,095
Net (loss) income		(11,793)	9,095
Single reportable segment
Segment operating expenses:
Compensation and benefits		3,129	2,388
Professional and legal fees		1,442	1,215
Office and travel		302	234
Research and development		1,064	113
Total selling, general and administrative, and research and development		5,937	3,950
Change in fair value of contingent consideration		(4)	(3,488)
Total operating costs and expenses		5,933	462
Loss from operations		(5,933)	(462)
Other segment items:
Change in fair value of convertible notes		(8,727)	(1,631)
Change in fair value of warrants		4,656	86,729
Loss on issuance of warrants			(75,644)
Loss on extinguishment of debt		(76)
Loss on derivative liability		(1,743)
Other income, net		30	103
Total other (loss) income, net		(5,860)	9,557
(Loss) income before taxes		(11,793)	9,095
Net (loss) income		$ (11,793)	$ 9,095