Quarterly report pursuant to Section 13 or 15(d)

PROPERTY AND EQUIPMENT, NET (Details)

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PROPERTY AND EQUIPMENT, NET (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Property, Plant and Equipment    
Property and equipment, gross $ 51,126 $ 34,473
Less accumulated depreciation (26,034) (21,835)
Property and equipment, net 25,092 12,638
Tooling and equipment    
Property, Plant and Equipment    
Property and equipment, gross 15,791 14,649
Furniture and other equipment    
Property, Plant and Equipment    
Property and equipment, gross $ 12,030 10,090
Useful life (in years) 5 years  
Computer software    
Property, Plant and Equipment    
Property and equipment, gross $ 2,244 2,152
Useful life (in years) 5 years  
Leasehold improvements    
Property, Plant and Equipment    
Property and equipment, gross $ 13,085 7,390
Equipment under capital lease    
Property, Plant and Equipment    
Property and equipment, gross $ 192 $ 192
Useful life (in years) 5 years  
Flight equipment held for R&D    
Property, Plant and Equipment    
Property and equipment, gross $ 7,784  
Useful life (in years) 2 years  
Minimum | Tooling and equipment    
Property, Plant and Equipment    
Useful life (in years) 7 years  
Minimum | Leasehold improvements    
Property, Plant and Equipment    
Useful life (in years) 3 years  
Maximum | Tooling and equipment    
Property, Plant and Equipment    
Useful life (in years) 15 years  
Maximum | Leasehold improvements    
Property, Plant and Equipment    
Useful life (in years) 10 years