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Schedule of Outstanding Warrants to Purchase Common Stock (Details) - USD ($)
 9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Warrants        
Warrants Outstanding, Beginning Balance 50,417 260,727 266,735  
Weighted Average Exercise Price, Beginning Balance $ 37.50 $ 36.00 $ 37.50  
Weighted Average Life of Outstanding Warrants in Months, Beginning Balance 6 months   9 months 21 months
Aggregate Intrinsic Value, Beginning Balance $ 0 $ 0 $ 0  
Warrants, Issued 227,719  
Weighted Average Exercise Price, Issued $ 9.00  
Aggregate Intrinsic Value, Issued  
Warrants, Exercised  
Weighted Average Exercise Price, Exercised  
Aggregate Intrinsic Value, Exercised  
Warrants, Expired (50,417) (210,310) (6,008)  
Weighted Average Exercise Price, Expired $ 37.50 $ (34.50) $ (99.00)  
Aggregate Intrinsic Value, Expired $ 0 $ 0 $ 0  
Warrants Outstanding, Ending Balance 227,719 50,417 260,727 266,735
Weighted Average Exercise Price, Ending Balance $ 9.00 $ 37.50 $ 36.00 $ 37.50
Weighted Average Life of Outstanding Warrants in Months, Ending Balance   6 months    
Aggregate Intrinsic Value, Ending Balance $ 0 $ 0 $ 0 $ 0
Weighted Average Life of Outstanding Warrants in Months, Issued 36 months      
Weighted Average Life of Outstanding Warrants in Months, Ending Balance 36 months