Nature of Business and Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Business Combination, Condensed Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024
Business Combination [Line Items]
Operating expenses		$ 233,284	$ 66,248
Other expense, net		$ 4,983	$ (1,448)
AIXC
Business Combination [Line Items]
Operating expenses	$ 7,364
Other expense, net	3,233
Net loss	$ (10,596)