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Assets and Liabilities Held for Sale (Tables)
3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment Assets Held-for-sale Disclosure [Abstract]  
Assets and liabilities held for sale
Cash and cash equivalents   $ 345,900  
Restricted cash     2,346,300  
Aircraft     24,550,000  
Notes payable and accrued interest, net of unamortized debt issuance costs of $313,400     13,836,900  
Derivative liability     767,900