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Notes Payable and Accrued Interest (Tables)
9 Months Ended
Sep. 30, 2020
Notes Payable [Abstract]  
Notes payable and accrued interest
   

September 30,

2020

   

December 31,

2019

 
MUFG Credit Facility and MUFG Loan:            
   Principal   $ 85,069,100     $ 84,084,100  
   Unamortized debt issuance costs     (1,558,000 )     (3,084,200 )
   Accrued interest     2,280,000       376,200  
Nord Loans:                
   Principal     25,783,000       30,914,500  
   Unamortized debt issuance costs     (348,500 )     (741,500 )
   Accrued interest     72,400       89,300  
Paycheck Protection Program Loan:                
   Principal     276,400       -  
   Accrued interest     1,000       -  
    $ 111,575,400     $ 111,638,400