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Property and Equipment, Net (Tables)
9 Months Ended
Sep. 30, 2021
Property, Plant and Equipment [Abstract]  
Schedule of property and equipment, net
(Amounts in thousands)  September 30,
2021
   December 31,
2020
 
Shop machinery and equipment  $11,556   $9,961 
Computers and electronics   1,454    575 
Office furniture and fixtures   710    348 
Building   4,801    
 
Land   1,330    
 
Leasehold improvements   1,269    274 
    21,120    11,158 
Less - accumulated depreciation   (11,324)   (8,872)
   $9,796   $2,286