Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Warrants (Details)

v3.20.2
Stockholders' Equity - Warrants (Details) - Warrants (Note 6) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Warrants, Outstanding Beginning Balance 4,207,447  
Warrants, Exercised (102,742)  
Warrants, Outstanding Ending Balance 4,104,705 4,207,447
Weighted Average Exercise Price, Nonvested Beginning Balance $ 6.81  
Weighted Average Exercise Price Exercised 0.13  
Weighted Average Exercise Price, Nonvested Ending Balance $ 6.98 $ 6.81
Weighted Average Remaining Contractual Life, Outstanding (in years) 4 months 24 days 1 year 3 months