Net Loss Per Share Attributable to Common Stockholders - Schedule of Calculation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2026	Jun. 30, 2026	Mar. 31, 2026	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2026	Sep. 30, 2025
Earnings Per Share, Basic [Abstract]
Net income (loss) from continuing operations	$ 26,675			$ (12,478)			$ (5,921)	$ (38,685)
Net loss from discontinued operations	(100)			(968)			(4,952)	(8,491)
Net income (Loss)	26,575			(13,446)			(10,873)	(47,176)
Less: Net income attributable to noncontrolling interest	573	$ 304	$ 272	0			1,149	0
Net Income (Loss) Attributable to XTI Aerospace, Inc.	26,002	$ (2,754)	$ (35,270)	(13,446)	$ (20,858)	$ (12,872)	(12,022)	(47,176)
Less: Preferred stock dividends	0			0			42	29
Net Income (Loss) Attributable to Common Stockholders	26,002			(13,446)			(12,064)	(47,205)
Impact of fair valuation of Warrants	(15,226)			0			0	0
Net income attributable to noncontrolling interest	573			0			0	0
Net income (loss) for diluted earnings per share	$ 11,349			$ (13,446)			$ (12,064)	$ (47,205)
Continuing operations, Basic (in dollars per share)	$ 0.68			$ (0.57)			$ (0.19)	$ (3.55)
Discontinued operations, Basic (in dollars per share)	0			(0.04)			(0.13)	(0.78)
Net income (loss) per share – basic (in dollars per share)	$ 0.68			$ (0.61)			$ (0.32)	$ (4.33)
Weighted Average Shares Outstanding, Basic (in shares)	38,477,789			22,065,141			37,403,649	10,914,152
Effect of dilutive securities:
Warrants (in shares)	15,319,752			0			0	0
Convertible Preferred Stock (in shares)	127			0			0	0
Noncontrolling Interest - Class B Units (in shares)	6,524,576			0			0	0
Total dilutive securities (in shares)	21,844,455			0			0	0
Weighted-average shares for diluted earnings per share (in shares)	60,322,244			22,065,141			37,403,649	10,914,152
Net income (loss) per share – diluted:
Continuing operations, Diluted (in dollars per share)	$ 0.19			$ (0.57)			$ (0.19)	$ (3.55)
Discontinued operations, Diluted (in dollars per share)	0			(0.04)			(0.13)	(0.78)
Net income (loss) per share – diluted (in dollars per share)	$ 0.19			$ (0.61)			$ (0.32)	$ (4.33)