Quarterly report pursuant to Section 13 or 15(d)

Warrants (Details)

v3.21.1
Warrants (Details) - Warrant - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Outstanding at beginning of year 2,726,700 2,875,006 2,875,006  
Issued 1,531,101      
Exercised (10,417)      
Outstanding at end of year 4,247,384 2,862,314 2,726,700 2,875,006
Weighted Average Exercise Price, Outstanding at beginning of year $ 8.41 $ 14.14 $ 14.14  
Weighted Average Exercise Price, Issued $ 5.23      
Weighted Average Exercise Price, Exercised 4.80      
Weighted Average Exercise Price, Outstanding at end of year $ 7.27 $ 13.10 $ 8.41 $ 14.14
Weighted Average Remaining Term in Years, Outstanding 3 years 1 month 17 days 3 years 1 month 10 days 2 years 5 months 12 days 3 years 4 months 13 days
Weighted Average Remaining Term in Years, Issued 4 years 9 months 7 days      
Weighted Average Remaining Term in Years, Forfeited 0 years