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Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment, Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 373,600	$ 326,684
Less: Accumulated depreciation and amortization	(60,578)	(40,714)
Property, plant and equipment, net	313,022	285,970
Transplant Aicraft [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	281,018	252,090
Transplant Aicraft Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,100
Flight School Aircraft [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,717	3,717
OCS Consoles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	22,866	19,193
Manufacturing Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	11,218	10,496
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4,144	3,979
Internal-use Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,049
Laboratory Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,317	2,904
Office, Trade Show and Training Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,292	4,698
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	23,531	22,949
Construction-In-Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,755	$ 6,658
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,593

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