Quarterly report pursuant to Section 13 or 15(d)

Stock Options, Warrants and Restricted Common Stock (Schedule of Award Activity) (Details)

v3.21.1
Stock Options, Warrants and Restricted Common Stock (Schedule of Award Activity) (Details) - Other common stock purchase options [Member] - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Shares Underlying Options/Warrants    
Outstanding, beginning 2,061,770  
Exercised (1,672,892)  
Outstanding, ending 388,878 2,061,770
Exercisable 388,878  
Weighted Average Exercise Price    
Outstanding, beginning $ 32.33  
Exercised 1.94  
Outstanding, ending 40.00 $ 32.33
Exercisable $ 40.00  
Weighted Average Remaining Contractual Term (Years)    
Outstanding 2 months 12 days 1 year 1 month 6 days
Exercisable 2 months 12 days  
Aggregate Intrinsic Value    
Outstanding $ 5,160 $ 6,256
Exercisable $ 5,160