Property and Equipment, Net (Tables)

3 Months Ended

Mar. 31, 2023

Property, Plant and Equipment [Abstract]

Property and Equipment, Net

Property and equipment, net, consisted of the following:

	Estimated	March 31,			December 31,
	Useful Life	2023			2022
Lab and test equipment	7 years	$	22,992		$	21,171
Vehicles	5 years		5,841			5,732
Equipment	3-7 years		42,819			40,940
Furniture and fixtures	7 years		2,853			2,841
Leasehold improvements	7 years		8,837			8,576
Aircraft	10 years		—			931
Building	39 years		6,112			2,975
			89,454			83,166
Land			725			725
Construction in progress			3,092			3,150
Less accumulated depreciation			(52,586	)		(50,996	)
Total property and equipment—    net		$	40,685		$	36,045