CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended	7 Months Ended	9 Months Ended
	Jul. 21, 2023	Sep. 30, 2023	Sep. 30, 2024	Jul. 21, 2023	Sep. 30, 2024
Operating expenses:
Selling, general and administrative	$ 1,055	$ 5,265	$ 3,044	$ 9,841	$ 11,014
Research and development	1,573	6,388	972	19,803	11,144
Acquired in-process research and development		348,000
Change in fair value of contingent consideration		(75,939)	0		(97,464)
Total operating costs and expenses	2,628	283,714	4,016	29,644	(75,306)
(Loss) income from operations	(2,628)	(283,714)	(4,016)	(29,644)	75,306
Other (loss) income:
Change in fair value of convertible notes	(13,249)		(1,878)	(19,359)	(170)
Change in fair value of warrants		1,593	(377)		(15,376)
Income (loss) on embedded forward purchase agreements and derivative liabilities, net	(11,789)	(15,776)	81	(11,789)	(19,931)
Other income, net	5	186	19	114	94
Total other loss, net	(25,033)	(13,997)	(2,155)	(31,034)	(35,383)
(Loss) income before taxes	(27,661)	(297,711)	(6,171)	(60,678)	39,923
Net (loss) income	$ (27,661)	$ (297,711)	$ (6,171)	$ (60,678)	$ 39,923
Basic net (loss) income per share (in dollars per share)	$ (0.20)	$ (8.01)	$ (0.16)	$ (0.44)	$ 1.04
Diluted net (loss) income per share (in dollars per share)	$ (0.20)	$ (8.01)	$ (0.16)	$ (0.44)	$ 0.97
Weighted average shares of common stock outstanding used to compute basic net (loss) income per share	138,848,177	37,159,600	39,515,292	138,848,177	38,545,882
Weighted average shares of common stock outstanding used to compute diluted net (loss) income per share	138,848,177	37,159,600	39,515,292	138,848,177	41,318,831
Financial Designation, Predecessor and Successor [Fixed List]	Predecessor	Successor	Successor	Predecessor	Successor