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Property and Equipment, Net (Tables)
3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment [Abstract]  
Schedule of estimated useful lives
Asset Type  Useful Life  
Shop machinery and equipment  3 – 5 years  
Computers and electronics  2 years  
Office furniture and fixtures  3 – 5 years  
Leasehold improvements  Shorter of remaining lease term or 5 years  
Schedule of property and equipment, net
(Amounts in US$’s)  March 31,
2021
   December 31,
2020
 
Shop machinery and equipment  $10,625,067   $9,960,626 
Computers and electronics   699,959    575,452 
Office furniture and fixtures   1,109,569    348,142 
Building   4,800,903     
Land   1,330,000     
Leasehold improvements   718,091    274,314 
    19,283,589    11,158,534 
Less - accumulated depreciation   (10,210,823)   (8,872,068)
   $9,072,766   $2,286,466