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Accounts Payable and Accrued Expenses (Details) - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Payables and Accruals [Abstract]      
Accounts payable and accrued expenses   $ 4,948,890 $ 5,455,063
Accounts payable and accrued expenses $ 4,242,821 $ 4,948,890