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Summary of Significant Accounting Policies (Tables)
 6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Accounting Policies [Abstract]    
Schedule of estimated useful lives  
Equipment  5 years
Furniture and fixtures  5 years
Computer and related equipment  3 years
Software  3 years
Vehicles  4 years
Leasehold improvements  Lesser of useful life of the asset or remaining life of the lease

 
Schedule of fair value of stock options issued
   For the Six Months Ended
June 30,		 
   2021   2020 
Expected volatility   78.0 – 87.1%    80.0 – 80.1% 
Expected term (in years)   6.25    6.25 
Risk-free interest rate   0.1%   0.0 – 0.2% 
Expected dividend yield   0.0%   0.0%

 
   2020  2019
       
Expected volatility  79.6 – 90.5%  70.0%
Expected term (in years)  6.2 - 10  6.1 - 10
Risk-free interest rate  0.3 – 1.6%  1.4 – 3.0%
Expected dividend yield  0.0%  0.0%

 
Schedule of reconciliation of cash, cash equivalents, and restricted cash
   As of June 30, 
   2021   2020 
Cash and cash equivalents  $384,143   $4,907 
Restricted cash   657    150 
Total cash, cash equivalents, and restricted cash  $384,800   $5,057