Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 112,076	$ 108,592
Less accumulated depreciation	(59,567)	(56,812)
Total property and equipment, net	$ 59,745	56,825
Lab and test equipment
Property Plant And Equipment [Line Items]
Estimated Useful Life	7 years
Property and equipment, gross	$ 20,823	20,341
Vehicles
Property Plant And Equipment [Line Items]
Estimated Useful Life	5 years
Property and equipment, gross	$ 6,063	6,033
Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 52,324	50,387
Equipment | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Life	3 years
Equipment | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Life	7 years
Furniture and fixtures
Property Plant And Equipment [Line Items]
Estimated Useful Life	7 years
Property and equipment, gross	$ 2,961	2,963
Leasehold improvements
Property Plant And Equipment [Line Items]
Estimated Useful Life	7 years
Property and equipment, gross	$ 11,845	10,808
Aircraft
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 12,312	12,312
Aircraft | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Life	10 years
Aircraft | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Life	20 years
Building
Property Plant And Equipment [Line Items]
Estimated Useful Life	39 years
Property and equipment, gross	$ 5,748	5,748
Land
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,089	1,089
Construction in Progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 6,147	$ 3,956