Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Warrants (Details)

v3.21.1
Stockholders' Equity - Warrants (Details) - Warrants - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Warrants, Outstanding Beginning Balance 57,515  
Warrants, Expired (44,324)  
Warrants, Outstanding Ending Balance 13,191 57,515
Weighted Average Exercise Price, Nonvested Beginning Balance $ 5.39  
Weighted Average Exercise Price Expired 7.00  
Weighted Average Exercise Price, Nonvested Ending Balance $ 0.00 $ 5.39
Weighted Average Remaining Contractual Life, Outstanding (in years) 4 years 6 months 29 days 1 year 2 months 19 days