Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 435,393	$ 393,721
Less: Accumulated depreciation and amortization	(73,822)	(66,065)
Property, plant and equipment, net	361,571	327,656
Transplant Aicraft [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	295,563	295,527
Transplant Aicraft Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,100	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	26,930	24,590
Manufacturing Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	13,476	12,101
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,378	3,376
Internal-use Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,240	12,413
Laboratory Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4,080	3,698
Office, Trade Show and Training Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,400	5,260
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	20,352
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	25,720	25,113
Construction-In-Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,158	2,174
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 16,279	$ 2,652

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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